2053865731 has 4 divisors (see below), whose sum is σ = 2082000952. Its totient is φ = 2025730512.

The previous prime is 2053865719. The next prime is 2053865747. The reversal of 2053865731 is 1375683502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2053865731 is a prime.

It is a super-2 number, since 2×2053865731² = 8436728881952328722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2053865711) 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, 14067501 + ... + 14067646.

It is an arithmetic number, because the mean of its divisors is an integer number (520500238).

Almost surely, 2^2053865731 is an apocalyptic number.

2053865731 is a deficient number, since it is larger than the sum of its proper divisors (28135221).

2053865731 is an equidigital number, since it uses as much as digits as its factorization.

2053865731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28135220.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 2053865731 is about 45319.5954417071. The cubic root of 2053865731 is about 1271.1320905496.

The spelling of 2053865731 in words is "two billion, fifty-three million, eight hundred sixty-five thousand, seven hundred thirty-one".