2591231830 has 32 divisors (see below), whose sum is σ = 5093915040. Its totient is φ = 941214720.

The previous prime is 2591231803. The next prime is 2591231891. The reversal of 2591231830 is 381321952.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89512 + ... + 114868.

It is an arithmetic number, because the mean of its divisors is an integer number (159184845).

Almost surely, 2^2591231830 is an apocalyptic number.

2591231830 is a deficient number, since it is larger than the sum of its proper divisors (2502683210).

2591231830 is a wasteful number, since it uses less digits than its factorization.

2591231830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26304.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 2591231830 is about 50904.1435445092. The cubic root of 2591231830 is about 1373.5213777891.

The spelling of 2591231830 in words is "two billion, five hundred ninety-one million, two hundred thirty-one thousand, eight hundred thirty".