2797491231 has 6 divisors (see below), whose sum is σ = 4040820680. Its totient is φ = 1864994148.

The previous prime is 2797491217. The next prime is 2797491259. The reversal of 2797491231 is 1321947972.

It is not a de Polignac number, because 2797491231 - 2⁹ = 2797490719 is a prime.

It is a super-2 number, since 2×2797491231² = 15651914375043790722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2797411231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155416171 + ... + 155416188.

Almost surely, 2^2797491231 is an apocalyptic number.

2797491231 is a deficient number, since it is larger than the sum of its proper divisors (1243329449).

2797491231 is a wasteful number, since it uses less digits than its factorization.

2797491231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310832365 (or 310832362 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 2797491231 is about 52891.3152700895. The cubic root of 2797491231 is about 1409.0386671845.

The spelling of 2797491231 in words is "two billion, seven hundred ninety-seven million, four hundred ninety-one thousand, two hundred thirty-one".