312499999938 has 64 divisors (see below), whose sum is σ = 731819531520. Its totient is φ = 87094656000.

The previous prime is 312499999919. The next prime is 312500000027. The reversal of 312499999938 is 839999994213.

It is a super-2 number, since 2×312499999938² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312499999938.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17950038 + ... + 17967438.

It is an arithmetic number, because the mean of its divisors is an integer number (11434680180).

Almost surely, 2^312499999938 is an apocalyptic number.

312499999938 is an abundant number, since it is smaller than the sum of its proper divisors (419319531582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312499999938 is a wasteful number, since it uses less digits than its factorization.

312499999938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27883.

The product of its digits is 306110016, while the sum is 75.

The spelling of 312499999938 in words is "three hundred twelve billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred thirty-eight".