312422013 has 12 divisors (see below), whose sum is σ = 455417820. Its totient is φ = 206369856.

The previous prime is 312421943. The next prime is 312422021. The reversal of 312422013 is 310224213.

It can be written as a sum of positive squares in 2 ways, for example, as 189943524 + 122478489 = 13782^2 + 11067^2 .

It is not a de Polignac number, because 312422013 - 2⁸ = 312421757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312422023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158256 + ... + 160217.

It is an arithmetic number, because the mean of its divisors is an integer number (37951485).

Almost surely, 2^312422013 is an apocalyptic number.

It is an amenable number.

312422013 is a deficient number, since it is larger than the sum of its proper divisors (142995807).

312422013 is a wasteful number, since it uses less digits than its factorization.

312422013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318588 (or 318585 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 312422013 is about 17675.4635865654. The cubic root of 312422013 is about 678.5479489757.

Adding to 312422013 its reverse (310224213), we get a palindrome (622646226).

The spelling of 312422013 in words is "three hundred twelve million, four hundred twenty-two thousand, thirteen".