312623947 has 2 divisors, whose sum is σ = 312623948. Its totient is φ = 312623946.

The previous prime is 312623939. The next prime is 312623951. The reversal of 312623947 is 749326213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312623947 - 2³ = 312623939 is a prime.

It is a zygodrome in base 12.

It is not a weakly prime, because it can be changed into another prime (312623917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156311973 + 156311974.

It is an arithmetic number, because the mean of its divisors is an integer number (156311974).

Almost surely, 2^312623947 is an apocalyptic number.

312623947 is a deficient number, since it is larger than the sum of its proper divisors (1).

312623947 is an equidigital number, since it uses as much as digits as its factorization.

312623947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 312623947 is about 17681.1749326791. The cubic root of 312623947 is about 678.6941106684.

The spelling of 312623947 in words is "three hundred twelve million, six hundred twenty-three thousand, nine hundred forty-seven".