31212645232 has 20 divisors (see below), whose sum is σ = 60480153576. Its totient is φ = 15604863680.

The previous prime is 31212645229. The next prime is 31212645239. The reversal of 31212645232 is 23254621213.

It is a junction number, because it is equal to n+sod(n) for n = 31212645194 and 31212645203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212645239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97098 + ... + 268054.

Almost surely, 2^31212645232 is an apocalyptic number.

It is an amenable number.

31212645232 is a deficient number, since it is larger than the sum of its proper divisors (29267508344).

31212645232 is a wasteful number, since it uses less digits than its factorization.

31212645232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182376 (or 182370 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The spelling of 31212645232 in words is "thirty-one billion, two hundred twelve million, six hundred forty-five thousand, two hundred thirty-two".