31313461923 has 16 divisors (see below), whose sum is σ = 46521745440. Its totient is φ = 20816497152.

The previous prime is 31313461919. The next prime is 31313461951. The reversal of 31313461923 is 32916431313.

It is a happy number.

31313461923 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 34 + 619 + 2 + 3 = 666.

It is not a de Polignac number, because 31313461923 - 2² = 31313461919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31313461973) 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 15 ways as a sum of consecutive naturals, for example, 1633186 + ... + 1652247.

It is an arithmetic number, because the mean of its divisors is an integer number (2907609090).

Almost surely, 2^31313461923 is an apocalyptic number.

31313461923 is a deficient number, since it is larger than the sum of its proper divisors (15208283517).

31313461923 is a wasteful number, since it uses less digits than its factorization.

31313461923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285795 (or 3285789 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The spelling of 31313461923 in words is "thirty-one billion, three hundred thirteen million, four hundred sixty-one thousand, nine hundred twenty-three".