2054120831 has 4 divisors (see below), whose sum is σ = 2347566672. Its totient is φ = 1760674992.

The previous prime is 2054120819. The next prime is 2054120857. The reversal of 2054120831 is 1380214502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2054120831 - 2²⁶ = 1987011967 is a prime.

It is a super-2 number, since 2×2054120831² = 8438824776696261122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2054120831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054120881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146722910 + ... + 146722923.

It is an arithmetic number, because the mean of its divisors is an integer number (586891668).

Almost surely, 2^2054120831 is an apocalyptic number.

2054120831 is a deficient number, since it is larger than the sum of its proper divisors (293445841).

2054120831 is an equidigital number, since it uses as much as digits as its factorization.

2054120831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293445840.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2054120831 is about 45322.4098101590. The cubic root of 2054120831 is about 1271.1847152770.

The spelling of 2054120831 in words is "two billion, fifty-four million, one hundred twenty thousand, eight hundred thirty-one".