321112615131 has 96 divisors (see below), whose sum is σ = 587868503040. Its totient is φ = 164059084800.

The previous prime is 321112615073. The next prime is 321112615139. The reversal of 321112615131 is 131516211123.

321112615131 is a `hidden beast` number, since 3 + 2 + 1 + 1 + 12 + 615 + 1 + 31 = 666.

It is not a de Polignac number, because 321112615131 - 2⁶ = 321112615067 is a prime.

It is a super-3 number, since 3×321112615131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 321112615095 and 321112615104.

It is not an unprimeable number, because it can be changed into a prime (321112615139) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18152611 + ... + 18170291.

It is an arithmetic number, because the mean of its divisors is an integer number (6123630240).

Almost surely, 2^321112615131 is an apocalyptic number.

321112615131 is a deficient number, since it is larger than the sum of its proper divisors (266755887909).

321112615131 is a wasteful number, since it uses less digits than its factorization.

321112615131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18137 (or 18134 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

Adding to 321112615131 its reverse (131516211123), we get a palindrome (452628826254).

The spelling of 321112615131 in words is "three hundred twenty-one billion, one hundred twelve million, six hundred fifteen thousand, one hundred thirty-one".