831135864 has 32 divisors (see below), whose sum is σ = 2237674320. Its totient is φ = 255734016.

The previous prime is 831135841. The next prime is 831135883. The reversal of 831135864 is 468531138.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1331637 + ... + 1332260.

Almost surely, 2^831135864 is an apocalyptic number.

It is an amenable number.

831135864 is an abundant number, since it is smaller than the sum of its proper divisors (1406538456).

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

831135864 is a wasteful number, since it uses less digits than its factorization.

831135864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663919 (or 2663915 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 831135864 is about 28829.4270494576. The cubic root of 831135864 is about 940.2081416253.

The spelling of 831135864 in words is "eight hundred thirty-one million, one hundred thirty-five thousand, eight hundred sixty-four".