312038013 has 16 divisors (see below), whose sum is σ = 476412416. Its totient is φ = 177960240.

The previous prime is 312038011. The next prime is 312038021. The reversal of 312038013 is 310830213.

It is a happy number.

It is not a de Polignac number, because 312038013 - 2¹ = 312038011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312038011) 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, 3223 + ... + 25188.

It is an arithmetic number, because the mean of its divisors is an integer number (29775776).

Almost surely, 2^312038013 is an apocalyptic number.

It is an amenable number.

312038013 is a deficient number, since it is larger than the sum of its proper divisors (164374403).

312038013 is a wasteful number, since it uses less digits than its factorization.

312038013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28944.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 312038013 is about 17664.5977310552. The cubic root of 312038013 is about 678.2698323818.

Adding to 312038013 its reverse (310830213), we get a palindrome (622868226).

The spelling of 312038013 in words is "three hundred twelve million, thirty-eight thousand, thirteen".