31223320132 has 24 divisors (see below), whose sum is σ = 55975262112. Its totient is φ = 15231216000.

The previous prime is 31223320097. The next prime is 31223320153. The reversal of 31223320132 is 23102332213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48507 + ... + 254557.

It is an arithmetic number, because the mean of its divisors is an integer number (2332302588).

Almost surely, 2^31223320132 is an apocalyptic number.

It is an amenable number.

31223320132 is a deficient number, since it is larger than the sum of its proper divisors (24751941980).

31223320132 is a wasteful number, since it uses less digits than its factorization.

31223320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206979 (or 206977 counting only the distinct ones).

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

Adding to 31223320132 its reverse (23102332213), we get a palindrome (54325652345).

The spelling of 31223320132 in words is "thirty-one billion, two hundred twenty-three million, three hundred twenty thousand, one hundred thirty-two".