2031945344 has 128 divisors (see below), whose sum is σ = 4910492160. Its totient is φ = 824832000.

The previous prime is 2031945343. The next prime is 2031945347. The reversal of 2031945344 is 4435491302.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (2031945341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565634 + ... + 569214.

It is an arithmetic number, because the mean of its divisors is an integer number (38363220).

Almost surely, 2^2031945344 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 2031945344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2455246080).

2031945344 is an abundant number, since it is smaller than the sum of its proper divisors (2878546816).

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

2031945344 is a wasteful number, since it uses less digits than its factorization.

2031945344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2031945344 is about 45077.1044322947. The cubic root of 2031945344 is about 1266.5937499423.

The spelling of 2031945344 in words is "two billion, thirty-one million, nine hundred forty-five thousand, three hundred forty-four".