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3123013331 = 4373319907
BaseRepresentation
bin1011101000100101…
…0110011011010011
322001122111111220102
42322021112123103
522343442411311
61233521003015
7140251114064
oct27211263323
98048444812
103123013331
111362950159
12731a8346b
133aa024ba9
14218aa856b
1513429243b
hexba2566d3

3123013331 has 8 divisors (see below), whose sum is σ = 3196400064. Its totient is φ = 3049661160.

The previous prime is 3123013319. The next prime is 3123013349. The reversal of 3123013331 is 1333103213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3123013331 - 210 = 3123012307 is a prime.

It is a super-2 number, since 2×31230133312 = 19506424531207431122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123013631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 310280 + ... + 320186.

It is an arithmetic number, because the mean of its divisors is an integer number (399550008).

Almost surely, 23123013331 is an apocalyptic number.

3123013331 is a deficient number, since it is larger than the sum of its proper divisors (73386733).

3123013331 is an equidigital number, since it uses as much as digits as its factorization.

3123013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17281.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 3123013331 is about 55883.9273047269. The cubic root of 3123013331 is about 1461.6989871419.

Adding to 3123013331 its reverse (1333103213), we get a palindrome (4456116544).

The spelling of 3123013331 in words is "three billion, one hundred twenty-three million, thirteen thousand, three hundred thirty-one".

Divisors: 1 43 7331 9907 315233 426001 72628217 3123013331