2031551968 has 96 divisors (see below), whose sum is σ = 4213363392. Its totient is φ = 963379200.

The previous prime is 2031551947. The next prime is 2031551971. The reversal of 2031551968 is 8691551302.

It is a self number, because there is not a number n which added to its sum of digits gives 2031551968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10526080 + ... + 10526272.

It is an arithmetic number, because the mean of its divisors is an integer number (43889202).

Almost surely, 2^2031551968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2031551968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106681696).

2031551968 is an abundant number, since it is smaller than the sum of its proper divisors (2181811424).

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

2031551968 is a wasteful number, since it uses less digits than its factorization.

2031551968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 2031551968 is about 45072.7408529812. The cubic root of 2031551968 is about 1266.5120089413.

The spelling of 2031551968 in words is "two billion, thirty-one million, five hundred fifty-one thousand, nine hundred sixty-eight".