2560731243 has 32 divisors (see below), whose sum is σ = 4087065600. Its totient is φ = 1394380416.

The previous prime is 2560731241. The next prime is 2560731247. The reversal of 2560731243 is 3421370652.

It is not a de Polignac number, because 2560731243 - 2¹ = 2560731241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2560731241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120073 + ... + 139781.

It is an arithmetic number, because the mean of its divisors is an integer number (127720800).

Almost surely, 2^2560731243 is an apocalyptic number.

2560731243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2560731243 is a deficient number, since it is larger than the sum of its proper divisors (1526334357).

2560731243 is a wasteful number, since it uses less digits than its factorization.

2560731243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 2560731243 is about 50603.6682761240. The cubic root of 2560731243 is about 1368.1109957688.

The spelling of 2560731243 in words is "two billion, five hundred sixty million, seven hundred thirty-one thousand, two hundred forty-three".