31230332132 has 12 divisors (see below), whose sum is σ = 54847578156. Its totient is φ = 15559595520.

The previous prime is 31230332131. The next prime is 31230332153. The reversal of 31230332132 is 23123303213.

It can be written as a sum of positive squares in 2 ways, for example, as 12149330176 + 19081001956 = 110224^2 + 138134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31230332098 and 31230332107.

It is not an unprimeable number, because it can be changed into a prime (31230332131) 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, 13891373 + ... + 13893620.

It is an arithmetic number, because the mean of its divisors is an integer number (4570631513).

Almost surely, 2^31230332132 is an apocalyptic number.

It is an amenable number.

31230332132 is a deficient number, since it is larger than the sum of its proper divisors (23617246024).

31230332132 is a wasteful number, since it uses less digits than its factorization.

31230332132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27785278 (or 27785276 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31230332132 its reverse (23123303213), we get a palindrome (54353635345).

The spelling of 31230332132 in words is "thirty-one billion, two hundred thirty million, three hundred thirty-two thousand, one hundred thirty-two".