31275772905 has 48 divisors (see below), whose sum is σ = 54420253056. Its totient is φ = 15330931200.

The previous prime is 31275772897. The next prime is 31275772963. The reversal of 31275772905 is 50927757213.

It is not a de Polignac number, because 31275772905 - 2³ = 31275772897 is a prime.

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 in 47 ways as a sum of consecutive naturals, for example, 564180 + ... + 617130.

It is an arithmetic number, because the mean of its divisors is an integer number (1133755272).

Almost surely, 2^31275772905 is an apocalyptic number.

It is an amenable number.

31275772905 is a deficient number, since it is larger than the sum of its proper divisors (23144480151).

31275772905 is a wasteful number, since it uses less digits than its factorization.

31275772905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53218 (or 53205 counting only the distinct ones).

The product of its (nonzero) digits is 926100, while the sum is 48.

The spelling of 31275772905 in words is "thirty-one billion, two hundred seventy-five million, seven hundred seventy-two thousand, nine hundred five".