31132319972 has 24 divisors (see below), whose sum is σ = 59331699000. Its totient is φ = 14207314176.

The previous prime is 31132319971. The next prime is 31132320029. The reversal of 31132319972 is 27991323113.

It can be written as a sum of positive squares in 4 ways, for example, as 1566893056 + 29565426916 = 39584^2 + 171946^2 .

It is not an unprimeable number, because it can be changed into a prime (31132319971) 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 7 ways as a sum of consecutive naturals, for example, 3358847 + ... + 3368102.

It is an arithmetic number, because the mean of its divisors is an integer number (2472154125).

Almost surely, 2^31132319972 is an apocalyptic number.

It is an amenable number.

31132319972 is a deficient number, since it is larger than the sum of its proper divisors (28199379028).

31132319972 is a wasteful number, since it uses less digits than its factorization.

31132319972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6727055 (or 6727053 counting only the distinct ones).

The product of its digits is 61236, while the sum is 41.

The spelling of 31132319972 in words is "thirty-one billion, one hundred thirty-two million, three hundred nineteen thousand, nine hundred seventy-two".