312956123 has 2 divisors, whose sum is σ = 312956124. Its totient is φ = 312956122.

The previous prime is 312956117. The next prime is 312956141. The reversal of 312956123 is 321659213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312956123 - 2¹² = 312952027 is a prime.

It is a super-2 number, since 2×312956123² = 195883069846382258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312956123.

It is not a weakly prime, because it can be changed into another prime (312950123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156478061 + 156478062.

It is an arithmetic number, because the mean of its divisors is an integer number (156478062).

Almost surely, 2^312956123 is an apocalyptic number.

312956123 is a deficient number, since it is larger than the sum of its proper divisors (1).

312956123 is an equidigital number, since it uses as much as digits as its factorization.

312956123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 312956123 is about 17690.5659321572. The cubic root of 312956123 is about 678.9344058597.

The spelling of 312956123 in words is "three hundred twelve million, nine hundred fifty-six thousand, one hundred twenty-three".