312747213 has 16 divisors (see below), whose sum is σ = 427242816. Its totient is φ = 203387520.

The previous prime is 312747137. The next prime is 312747217.

312747213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 312747213 - 2⁸ = 312746957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312747217) 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, 190231 + ... + 191867.

It is an arithmetic number, because the mean of its divisors is an integer number (26702676).

Almost surely, 2^312747213 is an apocalyptic number.

It is an amenable number.

312747213 is a deficient number, since it is larger than the sum of its proper divisors (114495603).

312747213 is a wasteful number, since it uses less digits than its factorization.

312747213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164.

The product of its digits is 7056, while the sum is 30.

The square root of 312747213 is about 17684.6603869003. The cubic root of 312747213 is about 678.7833008023.

The spelling of 312747213 in words is "three hundred twelve million, seven hundred forty-seven thousand, two hundred thirteen".