31121501132 has 12 divisors (see below), whose sum is σ = 55074567240. Its totient is φ = 15385910496.

The previous prime is 31121501069. The next prime is 31121501137. The reversal of 31121501132 is 23110512113.

It is not an unprimeable number, because it can be changed into a prime (31121501137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43709618 + ... + 43710329.

It is an arithmetic number, because the mean of its divisors is an integer number (4589547270).

Almost surely, 2^31121501132 is an apocalyptic number.

It is an amenable number.

31121501132 is a deficient number, since it is larger than the sum of its proper divisors (23953066108).

31121501132 is a wasteful number, since it uses less digits than its factorization.

31121501132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87420040 (or 87420038 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The spelling of 31121501132 in words is "thirty-one billion, one hundred twenty-one million, five hundred one thousand, one hundred thirty-two".