31396772375 has 16 divisors (see below), whose sum is σ = 39417827904. Its totient is φ = 24966997600.

The previous prime is 31396772369. The next prime is 31396772383. The reversal of 31396772375 is 57327769313.

It is not a de Polignac number, because 31396772375 - 2¹⁴ = 31396755991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731144 + ... + 772893.

It is an arithmetic number, because the mean of its divisors is an integer number (2463614244).

Almost surely, 2^31396772375 is an apocalyptic number.

31396772375 is a deficient number, since it is larger than the sum of its proper divisors (8021055529).

31396772375 is a wasteful number, since it uses less digits than its factorization.

31396772375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504219 (or 1504209 counting only the distinct ones).

The product of its digits is 5000940, while the sum is 53.

The spelling of 31396772375 in words is "thirty-one billion, three hundred ninety-six million, seven hundred seventy-two thousand, three hundred seventy-five".