312135439 has 48 divisors (see below), whose sum is σ = 431740800. Its totient is φ = 222264000.

The previous prime is 312135389. The next prime is 312135443. The reversal of 312135439 is 934531213.

It is not a de Polignac number, because 312135439 - 2²⁵ = 278581007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312135439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312135539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 296464 + ... + 297514.

It is an arithmetic number, because the mean of its divisors is an integer number (8994600).

Almost surely, 2^312135439 is an apocalyptic number.

312135439 is a deficient number, since it is larger than the sum of its proper divisors (119605361).

312135439 is a wasteful number, since it uses less digits than its factorization.

312135439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124 (or 1117 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

The square root of 312135439 is about 17667.3551784074. The cubic root of 312135439 is about 678.3404159194.

The spelling of 312135439 in words is "three hundred twelve million, one hundred thirty-five thousand, four hundred thirty-nine".