2531691679 has 16 divisors (see below), whose sum is σ = 2776634784. Its totient is φ = 2289254400.

The previous prime is 2531691667. The next prime is 2531691683. The reversal of 2531691679 is 9761961352.

It is a cyclic number.

It is not a de Polignac number, because 2531691679 - 2¹¹ = 2531689631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531691179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2195167 + ... + 2196319.

It is an arithmetic number, because the mean of its divisors is an integer number (173539674).

Almost surely, 2^2531691679 is an apocalyptic number.

2531691679 is a deficient number, since it is larger than the sum of its proper divisors (244943105).

2531691679 is a wasteful number, since it uses less digits than its factorization.

2531691679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058.

The product of its digits is 612360, while the sum is 49.

The square root of 2531691679 is about 50315.9187434752. The cubic root of 2531691679 is about 1362.9197075703.

The spelling of 2531691679 in words is "two billion, five hundred thirty-one million, six hundred ninety-one thousand, six hundred seventy-nine".