312118297 has 2 divisors, whose sum is σ = 312118298. Its totient is φ = 312118296.

The previous prime is 312118277. The next prime is 312118327. The reversal of 312118297 is 792811213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232837081 + 79281216 = 15259^2 + 8904^2 .

It is a cyclic number.

It is not a de Polignac number, because 312118297 - 2²³ = 303729689 is a prime.

It is not a weakly prime, because it can be changed into another prime (312118217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156059148 + 156059149.

It is an arithmetic number, because the mean of its divisors is an integer number (156059149).

Almost surely, 2^312118297 is an apocalyptic number.

It is an amenable number.

312118297 is a deficient number, since it is larger than the sum of its proper divisors (1).

312118297 is an equidigital number, since it uses as much as digits as its factorization.

312118297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 34.

The square root of 312118297 is about 17666.8700397099. The cubic root of 312118297 is about 678.3279978867.

The spelling of 312118297 in words is "three hundred twelve million, one hundred eighteen thousand, two hundred ninety-seven".