312516323 has 4 divisors (see below), whose sum is σ = 357161520. Its totient is φ = 267871128.

The previous prime is 312516311. The next prime is 312516349. The reversal of 312516323 is 323615213.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 312516323 - 2⁴ = 312516307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312516292 and 312516301.

It is not an unprimeable number, because it can be changed into a prime (312516353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22322588 + ... + 22322601.

It is an arithmetic number, because the mean of its divisors is an integer number (89290380).

Almost surely, 2^312516323 is an apocalyptic number.

312516323 is a deficient number, since it is larger than the sum of its proper divisors (44645197).

312516323 is an equidigital number, since it uses as much as digits as its factorization.

312516323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44645196.

The product of its digits is 3240, while the sum is 26.

The square root of 312516323 is about 17678.1312077946. The cubic root of 312516323 is about 678.6162192600.

The spelling of 312516323 in words is "three hundred twelve million, five hundred sixteen thousand, three hundred twenty-three".