2516431631 has 8 divisors (see below), whose sum is σ = 2876390400. Its totient is φ = 2156590008.

The previous prime is 2516431571. The next prime is 2516431637. The reversal of 2516431631 is 1361346152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2516431631 is a prime.

It is a super-2 number, since 2×2516431631² = 12664856306994640322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516431637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22970 + ... + 74568.

It is an arithmetic number, because the mean of its divisors is an integer number (359548800).

Almost surely, 2^2516431631 is an apocalyptic number.

2516431631 is a deficient number, since it is larger than the sum of its proper divisors (359958769).

2516431631 is an equidigital number, since it uses as much as digits as its factorization.

2516431631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58573.

The product of its digits is 12960, while the sum is 32.

The square root of 2516431631 is about 50164.0471951775. The cubic root of 2516431631 is about 1360.1758046592.

Adding to 2516431631 its reverse (1361346152), we get a palindrome (3877777783).

The spelling of 2516431631 in words is "two billion, five hundred sixteen million, four hundred thirty-one thousand, six hundred thirty-one".