312533013 has 16 divisors (see below), whose sum is σ = 451785600. Its totient is φ = 191033664.

The previous prime is 312533009. The next prime is 312533047. The reversal of 312533013 is 310335213.

It is not a de Polignac number, because 312533013 - 2² = 312533009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312533063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21081 + ... + 32702.

It is an arithmetic number, because the mean of its divisors is an integer number (28236600).

Almost surely, 2^312533013 is an apocalyptic number.

It is an amenable number.

312533013 is a deficient number, since it is larger than the sum of its proper divisors (139252587).

312533013 is a wasteful number, since it uses less digits than its factorization.

312533013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53948.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 312533013 is about 17678.6032536510. The cubic root of 312533013 is about 678.6282995923.

Adding to 312533013 its reverse (310335213), we get a palindrome (622868226).

The spelling of 312533013 in words is "three hundred twelve million, five hundred thirty-three thousand, thirteen".