31357852145 has 16 divisors (see below), whose sum is σ = 37960161408. Its totient is φ = 24866505600.

The previous prime is 31357852139. The next prime is 31357852157. The reversal of 31357852145 is 54125875313.

It is not a de Polignac number, because 31357852145 - 2²⁴ = 31341074929 is a prime.

It is a super-2 number, since 2×31357852145² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31357852096 and 31357852105.

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 15 ways as a sum of consecutive naturals, for example, 308117 + ... + 397053.

It is an arithmetic number, because the mean of its divisors is an integer number (2372510088).

Almost surely, 2^31357852145 is an apocalyptic number.

It is an amenable number.

31357852145 is a deficient number, since it is larger than the sum of its proper divisors (6602309263).

31357852145 is a wasteful number, since it uses less digits than its factorization.

31357852145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89560.

The product of its digits is 504000, while the sum is 44.

The spelling of 31357852145 in words is "thirty-one billion, three hundred fifty-seven million, eight hundred fifty-two thousand, one hundred forty-five".