6403522131 has 12 divisors (see below), whose sum is σ = 9275301360. Its totient is φ = 4257121200.

The previous prime is 6403522129. The next prime is 6403522133. The reversal of 6403522131 is 1312253046.

6403522131 is a `hidden beast` number, since 6 + 4 + 0 + 3 + 522 + 131 = 666.

It is an interprime number because it is at equal distance from previous prime (6403522129) and next prime (6403522133).

It is not a de Polignac number, because 6403522131 - 2¹ = 6403522129 is a prime.

It is a super-2 number, since 2×6403522131² = 82010191364413562322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6403522095 and 6403522104.

It is not an unprimeable number, because it can be changed into a prime (6403522133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 987720 + ... + 994181.

It is an arithmetic number, because the mean of its divisors is an integer number (772941780).

Almost surely, 2^6403522131 is an apocalyptic number.

6403522131 is a deficient number, since it is larger than the sum of its proper divisors (2871779229).

6403522131 is a wasteful number, since it uses less digits than its factorization.

6403522131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982266 (or 1982263 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 6403522131 is about 80022.0102909193. The cubic root of 6403522131 is about 1856.9760602334.

Adding to 6403522131 its reverse (1312253046), we get a palindrome (7715775177).

The spelling of 6403522131 in words is "six billion, four hundred three million, five hundred twenty-two thousand, one hundred thirty-one".