312322999 has 2 divisors, whose sum is σ = 312323000. Its totient is φ = 312322998.

The previous prime is 312322991. The next prime is 312323021. The reversal of 312322999 is 999223213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312322999 - 2³ = 312322991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312322991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156161499 + 156161500.

It is an arithmetic number, because the mean of its divisors is an integer number (156161500).

Almost surely, 2^312322999 is an apocalyptic number.

312322999 is a deficient number, since it is larger than the sum of its proper divisors (1).

312322999 is an equidigital number, since it uses as much as digits as its factorization.

312322999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 40.

The square root of 312322999 is about 17672.6624762654. The cubic root of 312322999 is about 678.4762587163.

The spelling of 312322999 in words is "three hundred twelve million, three hundred twenty-two thousand, nine hundred ninety-nine".