312897701 has 2 divisors, whose sum is σ = 312897702. Its totient is φ = 312897700.

The previous prime is 312897677. The next prime is 312897707. The reversal of 312897701 is 107798213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172948801 + 139948900 = 13151^2 + 11830^2 .

It is a cyclic number.

It is not a de Polignac number, because 312897701 - 2²² = 308703397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312897707) 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, 156448850 + 156448851.

It is an arithmetic number, because the mean of its divisors is an integer number (156448851).

Almost surely, 2^312897701 is an apocalyptic number.

It is an amenable number.

312897701 is a deficient number, since it is larger than the sum of its proper divisors (1).

312897701 is an equidigital number, since it uses as much as digits as its factorization.

312897701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 312897701 is about 17688.9146360086. The cubic root of 312897701 is about 678.8921558749.

The spelling of 312897701 in words is "three hundred twelve million, eight hundred ninety-seven thousand, seven hundred one".