312516836 has 6 divisors (see below), whose sum is σ = 546904470. Its totient is φ = 156258416.

The previous prime is 312516833. The next prime is 312516839. The reversal of 312516836 is 638615213.

It is an interprime number because it is at equal distance from previous prime (312516833) and next prime (312516839).

It can be written as a sum of positive squares in only one way, i.e., 273703936 + 38812900 = 16544^2 + 6230^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312516796 and 312516805.

It is not an unprimeable number, because it can be changed into a prime (312516833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39064601 + ... + 39064608.

It is an arithmetic number, because the mean of its divisors is an integer number (91150745).

Almost surely, 2^312516836 is an apocalyptic number.

It is an amenable number.

312516836 is a deficient number, since it is larger than the sum of its proper divisors (234387634).

312516836 is a wasteful number, since it uses less digits than its factorization.

312516836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78129213 (or 78129211 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 312516836 is about 17678.1457172408. The cubic root of 312516836 is about 678.6165905792.

The spelling of 312516836 in words is "three hundred twelve million, five hundred sixteen thousand, eight hundred thirty-six".