5631331403 has 2 divisors, whose sum is σ = 5631331404. Its totient is φ = 5631331402.

The previous prime is 5631331351. The next prime is 5631331429. The reversal of 5631331403 is 3041331365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5631331403 - 2¹⁰ = 5631330379 is a prime.

It is not a weakly prime, because it can be changed into another prime (5631331703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2815665701 + 2815665702.

It is an arithmetic number, because the mean of its divisors is an integer number (2815665702).

Almost surely, 2^5631331403 is an apocalyptic number.

5631331403 is a deficient number, since it is larger than the sum of its proper divisors (1).

5631331403 is an equidigital number, since it uses as much as digits as its factorization.

5631331403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 5631331403 is about 75042.1974824831. The cubic root of 5631331403 is about 1779.1136650094.

Adding to 5631331403 its reverse (3041331365), we get a palindrome (8672662768).

The spelling of 5631331403 in words is "five billion, six hundred thirty-one million, three hundred thirty-one thousand, four hundred three".