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3100020030 = 2325241714251
BaseRepresentation
bin1011100011000110…
…1000110100111110
322000001020100000200
42320301220310332
522322101120110
61231340104330
7136551510162
oct27061506476
98001210020
103100020030
111350975a28
127262350a6
133a53341a3
14215a00ca2
1513224e6c0
hexb8c68d3e

3100020030 has 48 divisors (see below), whose sum is σ = 8063952624. Its totient is φ = 826272000.

The previous prime is 3100020029. The next prime is 3100020083. The reversal of 3100020030 is 300200013.

It is a happy number.

It is a super-2 number, since 2×31000200302 = 19220248372802401800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 3100019994 and 3100020021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210405 + ... + 224655.

It is an arithmetic number, because the mean of its divisors is an integer number (167999013).

Almost surely, 23100020030 is an apocalyptic number.

3100020030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3100020030 is an abundant number, since it is smaller than the sum of its proper divisors (4963932594).

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

3100020030 is a wasteful number, since it uses less digits than its factorization.

3100020030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16681 (or 16678 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 3100020030 is about 55677.8235027196. The cubic root of 3100020030 is about 1458.1028762219.

Adding to 3100020030 its reverse (300200013), we get a palindrome (3400220043).

The spelling of 3100020030 in words is "three billion, one hundred million, twenty thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 2417 4834 7251 12085 14251 14502 21753 24170 28502 36255 42753 43506 71255 72510 85506 108765 128259 142510 213765 217530 256518 427530 641295 1282590 34444667 68889334 103334001 172223335 206668002 310002003 344446670 516670005 620004006 1033340010 1550010015 3100020030