312500000013 has 4 divisors (see below), whose sum is σ = 416666666688. Its totient is φ = 208333333340.

The previous prime is 312499999919. The next prime is 312500000027. The reversal of 312500000013 is 310000005213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312500000013 - 2¹⁶ = 312499934477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312499999938 and 312500000001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312500000063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52083333333 + ... + 52083333338.

It is an arithmetic number, because the mean of its divisors is an integer number (104166666672).

Almost surely, 2^312500000013 is an apocalyptic number.

It is an amenable number.

312500000013 is a deficient number, since it is larger than the sum of its proper divisors (104166666675).

312500000013 is a wasteful number, since it uses less digits than its factorization.

312500000013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104166666674.

The product of its (nonzero) digits is 90, while the sum is 15.

Adding to 312500000013 its reverse (310000005213), we get a palindrome (622500005226).

The spelling of 312500000013 in words is "three hundred twelve billion, five hundred million, thirteen", and thus it is an aban number.