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3121003230 = 235417932119
BaseRepresentation
bin1011101000000110…
…1011101011011110
322001111201101120020
42322001223223132
522342434100410
61233405533010
7140225042532
oct27201535336
98044641506
103121003230
1113617a7a14
12731274166
133a979cc97
14218703bc2
15133ee6a70
hexba06bade

3121003230 has 64 divisors (see below), whose sum is σ = 7770470400. Its totient is φ = 801665280.

The previous prime is 3121003211. The next prime is 3121003231. The reversal of 3121003230 is 323001213.

It is a super-2 number, since 2×31210032302 = 19481322323340865800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121003231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81111 + ... + 113229.

It is an arithmetic number, because the mean of its divisors is an integer number (121413600).

Almost surely, 23121003230 is an apocalyptic number.

3121003230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121003230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3885235200).

3121003230 is an abundant number, since it is smaller than the sum of its proper divisors (4649467170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121003230 is a wasteful number, since it uses less digits than its factorization.

3121003230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32249.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 3121003230 is about 55865.9398023518. The cubic root of 3121003230 is about 1461.3853164565.

Adding to 3121003230 its reverse (323001213), we get a palindrome (3444004443).

The spelling of 3121003230 in words is "three billion, one hundred twenty-one million, three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 41 79 82 123 158 205 237 246 395 410 474 615 790 1185 1230 2370 3239 6478 9717 16195 19434 32119 32390 48585 64238 96357 97170 160595 192714 321190 481785 963570 1316879 2537401 2633758 3950637 5074802 6584395 7612203 7901274 12687005 13168790 15224406 19753185 25374010 38061015 39506370 76122030 104033441 208066882 312100323 520167205 624200646 1040334410 1560501615 3121003230