312552971 has 2 divisors, whose sum is σ = 312552972. Its totient is φ = 312552970.

The previous prime is 312552917. The next prime is 312552991. The reversal of 312552971 is 179255213.

Together with previous prime (312552917) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312552971 - 2²⁶ = 245444107 is a prime.

It is not a weakly prime, because it can be changed into another prime (312552991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156276485 + 156276486.

It is an arithmetic number, because the mean of its divisors is an integer number (156276486).

Almost surely, 2^312552971 is an apocalyptic number.

312552971 is a deficient number, since it is larger than the sum of its proper divisors (1).

312552971 is an equidigital number, since it uses as much as digits as its factorization.

312552971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 312552971 is about 17679.1677123104. The cubic root of 312552971 is about 678.6427447600.

The spelling of 312552971 in words is "three hundred twelve million, five hundred fifty-two thousand, nine hundred seventy-one".