10311321996 has 18 divisors (see below), whose sum is σ = 26064730692. Its totient is φ = 3437107320.

The previous prime is 10311321961. The next prime is 10311322013. The reversal of 10311321996 is 69912311301.

10311321996 is a `hidden beast` number, since 10 + 311 + 321 + 9 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×10311321996² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 286425611 = 10311321996 / (1 + 0 + 3 + 1 + 1 + 3 + 2 + 1 + 9 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 10311321996.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143212770 + ... + 143212841.

It is an arithmetic number, because the mean of its divisors is an integer number (1448040594).

Almost surely, 2^10311321996 is an apocalyptic number.

It is an amenable number.

10311321996 is an abundant number, since it is smaller than the sum of its proper divisors (15753408696).

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

10311321996 is a wasteful number, since it uses less digits than its factorization.

10311321996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286425621 (or 286425616 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The spelling of 10311321996 in words is "ten billion, three hundred eleven million, three hundred twenty-one thousand, nine hundred ninety-six".