312420079 has 2 divisors, whose sum is σ = 312420080. Its totient is φ = 312420078.

The previous prime is 312420061. The next prime is 312420137. The reversal of 312420079 is 970024213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312420079 - 2¹⁷ = 312289007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312420019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156210039 + 156210040.

It is an arithmetic number, because the mean of its divisors is an integer number (156210040).

Almost surely, 2^312420079 is an apocalyptic number.

312420079 is a deficient number, since it is larger than the sum of its proper divisors (1).

312420079 is an equidigital number, since it uses as much as digits as its factorization.

312420079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 312420079 is about 17675.4088778732. The cubic root of 312420079 is about 678.5465488242.

The spelling of 312420079 in words is "three hundred twelve million, four hundred twenty thousand, seventy-nine".