312630079 has 2 divisors, whose sum is σ = 312630080. Its totient is φ = 312630078.

The previous prime is 312630061. The next prime is 312630083. The reversal of 312630079 is 970036213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312630079 - 2⁹ = 312629567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312630079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312630089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156315039 + 156315040.

It is an arithmetic number, because the mean of its divisors is an integer number (156315040).

Almost surely, 2^312630079 is an apocalyptic number.

312630079 is a deficient number, since it is larger than the sum of its proper divisors (1).

312630079 is an equidigital number, since it uses as much as digits as its factorization.

312630079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 312630079 is about 17681.3483365947. The cubic root of 312630079 is about 678.6985480818.

The spelling of 312630079 in words is "three hundred twelve million, six hundred thirty thousand, seventy-nine".