6404463131 has 24 divisors (see below), whose sum is σ = 7274654064. Its totient is φ = 5589721280.

The previous prime is 6404463103. The next prime is 6404463151. The reversal of 6404463131 is 1313644046.

It is not a de Polignac number, because 6404463131 - 2¹⁸ = 6404200987 is a prime.

It is a super-2 number, since 2×6404463131² = 82034295992676646322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6404463151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1285361 + ... + 1290333.

It is an arithmetic number, because the mean of its divisors is an integer number (303110586).

Almost surely, 2^6404463131 is an apocalyptic number.

6404463131 is a deficient number, since it is larger than the sum of its proper divisors (870190933).

6404463131 is a wasteful number, since it uses less digits than its factorization.

6404463131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131 (or 5084 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 6404463131 is about 80027.8897072764. The cubic root of 6404463131 is about 1857.0670168897.

The spelling of 6404463131 in words is "six billion, four hundred four million, four hundred sixty-three thousand, one hundred thirty-one".