312031013 has 16 divisors (see below), whose sum is σ = 363614976. Its totient is φ = 262241280.

The previous prime is 312030997. The next prime is 312031121. The reversal of 312031013 is 310130213.

It is not a de Polignac number, because 312031013 - 2⁴ = 312030997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312031513) 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, 94295 + ... + 97547.

It is an arithmetic number, because the mean of its divisors is an integer number (22725936).

Almost surely, 2^312031013 is an apocalyptic number.

It is an amenable number.

312031013 is a deficient number, since it is larger than the sum of its proper divisors (51583963).

312031013 is a wasteful number, since it uses less digits than its factorization.

312031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 312031013 is about 17664.3995935328. The cubic root of 312031013 is about 678.2647604310.

Adding to 312031013 its reverse (310130213), we get a palindrome (622161226).

The spelling of 312031013 in words is "three hundred twelve million, thirty-one thousand, thirteen".