2321391051 has 24 divisors (see below), whose sum is σ = 3894965984. Its totient is φ = 1304760960.

The previous prime is 2321391047. The next prime is 2321391071. The reversal of 2321391051 is 1501931232.

It is not a de Polignac number, because 2321391051 - 2² = 2321391047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2321391071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298186 + ... + 305871.

Almost surely, 2^2321391051 is an apocalyptic number.

2321391051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2321391051 is a deficient number, since it is larger than the sum of its proper divisors (1573574933).

2321391051 is a wasteful number, since it uses less digits than its factorization.

2321391051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604131 (or 604128 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 2321391051 is about 48180.8162135097. The cubic root of 2321391051 is about 1324.0857204763.

The spelling of 2321391051 in words is "two billion, three hundred twenty-one million, three hundred ninety-one thousand, fifty-one".