31330201232 has 40 divisors (see below), whose sum is σ = 67018523040. Its totient is φ = 14069415680.

The previous prime is 31330201213. The next prime is 31330201303. The reversal of 31330201232 is 23210203313.

It is a super-2 number, since 2×31330201232² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057757 + ... + 1086972.

It is an arithmetic number, because the mean of its divisors is an integer number (1675463076).

Almost surely, 2^31330201232 is an apocalyptic number.

It is an amenable number.

31330201232 is an abundant number, since it is smaller than the sum of its proper divisors (35688321808).

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

31330201232 is a wasteful number, since it uses less digits than its factorization.

31330201232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144831 (or 2144825 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31330201232 its reverse (23210203313), we get a palindrome (54540404545).

The spelling of 31330201232 in words is "thirty-one billion, three hundred thirty million, two hundred one thousand, two hundred thirty-two".