5208081631 has 16 divisors (see below), whose sum is σ = 5674206816. Its totient is φ = 4760211456.

The previous prime is 5208081589. The next prime is 5208081649. The reversal of 5208081631 is 1361808025.

It is a cyclic number.

It is not a de Polignac number, because 5208081631 - 2¹⁵ = 5208048863 is a prime.

It is a super-2 number, since 2×5208081631² = 54248228550319240322, 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 (5208081661) 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, 336495 + ... + 351631.

It is an arithmetic number, because the mean of its divisors is an integer number (354637926).

Almost surely, 2^5208081631 is an apocalyptic number.

5208081631 is a deficient number, since it is larger than the sum of its proper divisors (466125185).

5208081631 is a wasteful number, since it uses less digits than its factorization.

5208081631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15738.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 5208081631 is about 72167.0397827152. The cubic root of 5208081631 is about 1733.3752621227.

Adding to 5208081631 its reverse (1361808025), we get a palindrome (6569889656).

The spelling of 5208081631 in words is "five billion, two hundred eight million, eighty-one thousand, six hundred thirty-one".