312027857 has 2 divisors, whose sum is σ = 312027858. Its totient is φ = 312027856.

The previous prime is 312027853. The next prime is 312027901. The reversal of 312027857 is 758720213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223084096 + 88943761 = 14936^2 + 9431^2 .

It is a cyclic number.

It is not a de Polignac number, because 312027857 - 2² = 312027853 is a prime.

It is a super-2 number, since 2×312027857² = 194722767088024898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312027851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156013928 + 156013929.

It is an arithmetic number, because the mean of its divisors is an integer number (156013929).

Almost surely, 2^312027857 is an apocalyptic number.

It is an amenable number.

312027857 is a deficient number, since it is larger than the sum of its proper divisors (1).

312027857 is an equidigital number, since it uses as much as digits as its factorization.

312027857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 312027857 is about 17664.3102610886. The cubic root of 312027857 is about 678.2624736810.

The spelling of 312027857 in words is "three hundred twelve million, twenty-seven thousand, eight hundred fifty-seven".