2031891696 has 40 divisors (see below), whose sum is σ = 5832282960. Its totient is φ = 677297088.

The previous prime is 2031891671. The next prime is 2031891713. The reversal of 2031891696 is 6961981302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351295 + ... + 2352158.

It is an arithmetic number, because the mean of its divisors is an integer number (145807074).

Almost surely, 2^2031891696 is an apocalyptic number.

It is an amenable number.

2031891696 is an abundant number, since it is smaller than the sum of its proper divisors (3800391264).

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

2031891696 is a wasteful number, since it uses less digits than its factorization.

2031891696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703470 (or 4703458 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 2031891696 is about 45076.5093590886. The cubic root of 2031891696 is about 1266.5826028545.

The spelling of 2031891696 in words is "two billion, thirty-one million, eight hundred ninety-one thousand, six hundred ninety-six".