312130979 has 2 divisors, whose sum is σ = 312130980. Its totient is φ = 312130978.

The previous prime is 312130969. The next prime is 312131021. The reversal of 312130979 is 979031213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312130979 - 2¹² = 312126883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312130969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156065489 + 156065490.

It is an arithmetic number, because the mean of its divisors is an integer number (156065490).

Almost surely, 2^312130979 is an apocalyptic number.

312130979 is a deficient number, since it is larger than the sum of its proper divisors (1).

312130979 is an equidigital number, since it uses as much as digits as its factorization.

312130979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 312130979 is about 17667.2289564606. The cubic root of 312130979 is about 678.3371850435.

The spelling of 312130979 in words is "three hundred twelve million, one hundred thirty thousand, nine hundred seventy-nine".