312015323 has 2 divisors, whose sum is σ = 312015324. Its totient is φ = 312015322.

The previous prime is 312015313. The next prime is 312015329. The reversal of 312015323 is 323510213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312015323 - 2⁴ = 312015307 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 312015295 and 312015304.

It is not a weakly prime, because it can be changed into another prime (312015329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156007661 + 156007662.

It is an arithmetic number, because the mean of its divisors is an integer number (156007662).

Almost surely, 2^312015323 is an apocalyptic number.

312015323 is a deficient number, since it is larger than the sum of its proper divisors (1).

312015323 is an equidigital number, since it uses as much as digits as its factorization.

312015323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 312015323 is about 17663.9554743551. The cubic root of 312015323 is about 678.2533917401.

Adding to 312015323 its reverse (323510213), we get a palindrome (635525536).

The spelling of 312015323 in words is "three hundred twelve million, fifteen thousand, three hundred twenty-three".