10312191856 has 20 divisors (see below), whose sum is σ = 20519869432. Its totient is φ = 5016741696.

The previous prime is 10312191829. The next prime is 10312191913. The reversal of 10312191856 is 65819121301.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8709030 + ... + 8710213.

Almost surely, 2^10312191856 is an apocalyptic number.

10312191856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10312191856 is a deficient number, since it is larger than the sum of its proper divisors (10207677576).

10312191856 is a wasteful number, since it uses less digits than its factorization.

10312191856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17419288 (or 17419282 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 10312191856 in words is "ten billion, three hundred twelve million, one hundred ninety-one thousand, eight hundred fifty-six".