5631888931 has 2 divisors, whose sum is σ = 5631888932. Its totient is φ = 5631888930.

The previous prime is 5631888869. The next prime is 5631888949. The reversal of 5631888931 is 1398881365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5631888931 - 2⁹ = 5631888419 is a prime.

It is a super-2 number, since 2×5631888931² = 63436345862240645522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5631888961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2815944465 + 2815944466.

It is an arithmetic number, because the mean of its divisors is an integer number (2815944466).

Almost surely, 2^5631888931 is an apocalyptic number.

5631888931 is a deficient number, since it is larger than the sum of its proper divisors (1).

5631888931 is an equidigital number, since it uses as much as digits as its factorization.

5631888931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 52.

The square root of 5631888931 is about 75045.9121538275. The cubic root of 5631888931 is about 1779.1723765810.

The spelling of 5631888931 in words is "five billion, six hundred thirty-one million, eight hundred eighty-eight thousand, nine hundred thirty-one".