31353231372 has 12 divisors (see below), whose sum is σ = 73157539896. Its totient is φ = 10451077120.

The previous prime is 31353231367. The next prime is 31353231383. The reversal of 31353231372 is 27313235313.

It is a happy number.

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, 1306384629 + ... + 1306384652.

It is an arithmetic number, because the mean of its divisors is an integer number (6096461658).

Almost surely, 2^31353231372 is an apocalyptic number.

It is an amenable number.

31353231372 is an abundant number, since it is smaller than the sum of its proper divisors (41804308524).

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

31353231372 is a wasteful number, since it uses less digits than its factorization.

31353231372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612769288 (or 2612769286 counting only the distinct ones).

The product of its digits is 34020, while the sum is 33.

Adding to 31353231372 its reverse (27313235313), we get a palindrome (58666466685).

The spelling of 31353231372 in words is "thirty-one billion, three hundred fifty-three million, two hundred thirty-one thousand, three hundred seventy-two".