12313161272 has 16 divisors (see below), whose sum is σ = 23883287400. Its totient is φ = 5944284640.

The previous prime is 12313161271. The next prime is 12313161307. The reversal of 12313161272 is 27216131321.

It is a super-2 number, since 2×12313161272² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313161271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26536754 + ... + 26537217.

Almost surely, 2^12313161272 is an apocalyptic number.

It is an amenable number.

12313161272 is a deficient number, since it is larger than the sum of its proper divisors (11570126128).

12313161272 is a wasteful number, since it uses less digits than its factorization.

12313161272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53074006 (or 53074002 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

Adding to 12313161272 its reverse (27216131321), we get a palindrome (39529292593).

The spelling of 12313161272 in words is "twelve billion, three hundred thirteen million, one hundred sixty-one thousand, two hundred seventy-two".