312907139 has 2 divisors, whose sum is σ = 312907140. Its totient is φ = 312907138.

The previous prime is 312907109. The next prime is 312907163. The reversal of 312907139 is 931709213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312907139 - 2⁸ = 312906883 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 312907099 and 312907108.

It is not a weakly prime, because it can be changed into another prime (312907109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156453569 + 156453570.

It is an arithmetic number, because the mean of its divisors is an integer number (156453570).

Almost surely, 2^312907139 is an apocalyptic number.

312907139 is a deficient number, since it is larger than the sum of its proper divisors (1).

312907139 is an equidigital number, since it uses as much as digits as its factorization.

312907139 is an odious number, because the sum of its binary digits is odd.

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

The square root of 312907139 is about 17689.1814112468. The cubic root of 312907139 is about 678.8989816625.

The spelling of 312907139 in words is "three hundred twelve million, nine hundred seven thousand, one hundred thirty-nine".