31324122156 has 12 divisors (see below), whose sum is σ = 73089618392. Its totient is φ = 10441374048.

The previous prime is 31324122127. The next prime is 31324122161. The reversal of 31324122156 is 65122142313.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1305171745 + ... + 1305171768.

Almost surely, 2^31324122156 is an apocalyptic number.

It is an amenable number.

31324122156 is an abundant number, since it is smaller than the sum of its proper divisors (41765496236).

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

31324122156 is a wasteful number, since it uses less digits than its factorization.

31324122156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610343520 (or 2610343518 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

Adding to 31324122156 its reverse (65122142313), we get a palindrome (96446264469).

The spelling of 31324122156 in words is "thirty-one billion, three hundred twenty-four million, one hundred twenty-two thousand, one hundred fifty-six".