312493747 has 2 divisors, whose sum is σ = 312493748. Its totient is φ = 312493746.

The previous prime is 312493739. The next prime is 312493751. The reversal of 312493747 is 747394213.

It is a strong prime.

It is an emirp because it is prime and its reverse (747394213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312493747 - 2³ = 312493739 is a prime.

It is not a weakly prime, because it can be changed into another prime (312493717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156246873 + 156246874.

It is an arithmetic number, because the mean of its divisors is an integer number (156246874).

Almost surely, 2^312493747 is an apocalyptic number.

312493747 is a deficient number, since it is larger than the sum of its proper divisors (1).

312493747 is an equidigital number, since it uses as much as digits as its factorization.

312493747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 40.

The square root of 312493747 is about 17677.4926672308. The cubic root of 312493747 is about 678.5998779176.

The spelling of 312493747 in words is "three hundred twelve million, four hundred ninety-three thousand, seven hundred forty-seven".