679500117831 has 4 divisors (see below), whose sum is σ = 906000157112. Its totient is φ = 453000078552.

The previous prime is 679500117823. The next prime is 679500117833. The reversal of 679500117831 is 138711005976.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 679500117831 - 2³ = 679500117823 is a prime.

It is a super-2 number, since 2×679500117831² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679500117833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113250019636 + ... + 113250019641.

It is an arithmetic number, because the mean of its divisors is an integer number (226500039278).

Almost surely, 2^679500117831 is an apocalyptic number.

679500117831 is a deficient number, since it is larger than the sum of its proper divisors (226500039281).

679500117831 is a wasteful number, since it uses less digits than its factorization.

679500117831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226500039280.

The product of its (nonzero) digits is 317520, while the sum is 48.

The spelling of 679500117831 in words is "six hundred seventy-nine billion, five hundred million, one hundred seventeen thousand, eight hundred thirty-one".