2160557731 has 2 divisors, whose sum is σ = 2160557732. Its totient is φ = 2160557730.

The previous prime is 2160557701. The next prime is 2160557743. The reversal of 2160557731 is 1377550612.

2160557731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2160557731 - 2⁹ = 2160557219 is a prime.

It is a super-2 number, since 2×2160557731² = 9336019417967736722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2160557701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080278865 + 1080278866.

It is an arithmetic number, because the mean of its divisors is an integer number (1080278866).

Almost surely, 2^2160557731 is an apocalyptic number.

2160557731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160557731 is an equidigital number, since it uses as much as digits as its factorization.

2160557731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 2160557731 is about 46481.7999974183. The cubic root of 2160557731 is about 1292.7720632421.

The spelling of 2160557731 in words is "two billion, one hundred sixty million, five hundred fifty-seven thousand, seven hundred thirty-one".