312100002158 has 64 divisors (see below), whose sum is σ = 554517508608. Its totient is φ = 128975483520.

The previous prime is 312100002139. The next prime is 312100002161. The reversal of 312100002158 is 851200001213.

It is a happy number.

It is a super-2 number, since 2×312100002158² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79070741 + ... + 79074687.

It is an arithmetic number, because the mean of its divisors is an integer number (8664336072).

Almost surely, 2^312100002158 is an apocalyptic number.

312100002158 is a deficient number, since it is larger than the sum of its proper divisors (242417506450).

312100002158 is a wasteful number, since it uses less digits than its factorization.

312100002158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817.

The product of its (nonzero) digits is 480, while the sum is 23.

The spelling of 312100002158 in words is "three hundred twelve billion, one hundred million, two thousand, one hundred fifty-eight".