312824969 has 2 divisors, whose sum is σ = 312824970. Its totient is φ = 312824968.

The previous prime is 312824959. The next prime is 312824983. The reversal of 312824969 is 969428213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250019344 + 62805625 = 15812^2 + 7925^2 .

It is a cyclic number.

It is not a de Polignac number, because 312824969 - 2⁸ = 312824713 is a prime.

It is a super-2 number, since 2×312824969² = 195718922459701922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (312824959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156412484 + 156412485.

It is an arithmetic number, because the mean of its divisors is an integer number (156412485).

Almost surely, 2^312824969 is an apocalyptic number.

It is an amenable number.

312824969 is a deficient number, since it is larger than the sum of its proper divisors (1).

312824969 is an equidigital number, since it uses as much as digits as its factorization.

312824969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 312824969 is about 17686.8586526834. The cubic root of 312824969 is about 678.8395497458.

The spelling of 312824969 in words is "three hundred twelve million, eight hundred twenty-four thousand, nine hundred sixty-nine".