2143731560 has 32 divisors (see below), whose sum is σ = 5033111040. Its totient is φ = 820209984.

The previous prime is 2143731539. The next prime is 2143731571. The reversal of 2143731560 is 651373412.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1164152 + ... + 1165991.

It is an arithmetic number, because the mean of its divisors is an integer number (157284720).

Almost surely, 2^2143731560 is an apocalyptic number.

2143731560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143731560 is an abundant number, since it is smaller than the sum of its proper divisors (2889379480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143731560 is a wasteful number, since it uses less digits than its factorization.

2143731560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330177 (or 2330173 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 2143731560 is about 46300.4488099198. The cubic root of 2143731560 is about 1289.4073274501.

The spelling of 2143731560 in words is "two billion, one hundred forty-three million, seven hundred thirty-one thousand, five hundred sixty".