31862357145 has 24 divisors (see below), whose sum is σ = 55232368776. Its totient is φ = 16991939328.

The previous prime is 31862357129. The next prime is 31862357179. The reversal of 31862357145 is 54175326813.

It is a happy number.

31862357145 is a `hidden beast` number, since 3 + 1 + 8 + 623 + 5 + 7 + 14 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17783822736 + 14078534409 = 133356^2 + 118653^2 .

It is not a de Polignac number, because 31862357145 - 2⁴ = 31862357129 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 31862357145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 914077 + ... + 948293.

It is an arithmetic number, because the mean of its divisors is an integer number (2301348699).

Almost surely, 2^31862357145 is an apocalyptic number.

It is an amenable number.

31862357145 is a deficient number, since it is larger than the sum of its proper divisors (23370011631).

31862357145 is a wasteful number, since it uses less digits than its factorization.

31862357145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54921 (or 54918 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 31862357145 in words is "thirty-one billion, eight hundred sixty-two million, three hundred fifty-seven thousand, one hundred forty-five".