31323012232 has 8 divisors (see below), whose sum is σ = 58730647950. Its totient is φ = 15661506112.

The previous prime is 31323012223. The next prime is 31323012233. The reversal of 31323012232 is 23221032313.

It can be written as a sum of positive squares in only one way, i.e., 18380309476 + 12942702756 = 135574^2 + 113766^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31323012232² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31323012233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957688257 + ... + 1957688272.

Almost surely, 2^31323012232 is an apocalyptic number.

It is an amenable number.

31323012232 is a deficient number, since it is larger than the sum of its proper divisors (27407635718).

31323012232 is a wasteful number, since it uses less digits than its factorization.

31323012232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915376535 (or 3915376531 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31323012232 its reverse (23221032313), we get a palindrome (54544044545).

The spelling of 31323012232 in words is "thirty-one billion, three hundred twenty-three million, twelve thousand, two hundred thirty-two".