31530266132 has 6 divisors (see below), whose sum is σ = 55177965738. Its totient is φ = 15765133064.

The previous prime is 31530266123. The next prime is 31530266221. The reversal of 31530266132 is 23166203513.

It can be written as a sum of positive squares in only one way, i.e., 30386067856 + 1144198276 = 174316^2 + 33826^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3941283263 + ... + 3941283270.

It is an arithmetic number, because the mean of its divisors is an integer number (9196327623).

Almost surely, 2^31530266132 is an apocalyptic number.

It is an amenable number.

31530266132 is a deficient number, since it is larger than the sum of its proper divisors (23647699606).

31530266132 is a wasteful number, since it uses less digits than its factorization.

31530266132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7882566537 (or 7882566535 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 31530266132 its reverse (23166203513), we get a palindrome (54696469645).

The spelling of 31530266132 in words is "thirty-one billion, five hundred thirty million, two hundred sixty-six thousand, one hundred thirty-two".