312698639 has 16 divisors (see below), whose sum is σ = 360854784. Its totient is φ = 268171200.

The previous prime is 312698621. The next prime is 312698641. The reversal of 312698639 is 936896213.

It is not a de Polignac number, because 312698639 - 2¹⁶ = 312633103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312698593 and 312698602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312698699) 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, 10004 + ... + 26934.

It is an arithmetic number, because the mean of its divisors is an integer number (22553424).

Almost surely, 2^312698639 is an apocalyptic number.

312698639 is a deficient number, since it is larger than the sum of its proper divisors (48156145).

312698639 is a wasteful number, since it uses less digits than its factorization.

312698639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17038.

The product of its digits is 419904, while the sum is 47.

The square root of 312698639 is about 17683.2869964834. The cubic root of 312698639 is about 678.7481574813.

The spelling of 312698639 in words is "three hundred twelve million, six hundred ninety-eight thousand, six hundred thirty-nine".