6431390541 has 24 divisors (see below), whose sum is σ = 10094173440. Its totient is φ = 3930897600.

The previous prime is 6431390533. The next prime is 6431390557. The reversal of 6431390541 is 1450931346.

6431390541 is a `hidden beast` number, since 643 + 1 + 3 + 9 + 0 + 5 + 4 + 1 = 666.

It is not a de Polignac number, because 6431390541 - 2³ = 6431390533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6431390496 and 6431390505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6431390561) 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, 601320 + ... + 611921.

It is an arithmetic number, because the mean of its divisors is an integer number (420590560).

Almost surely, 2^6431390541 is an apocalyptic number.

It is an amenable number.

6431390541 is a deficient number, since it is larger than the sum of its proper divisors (3662782899).

6431390541 is a wasteful number, since it uses less digits than its factorization.

6431390541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213297 (or 1213294 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6431390541 is about 80195.9509015262. The cubic root of 6431390541 is about 1859.6660421929. Note that the first 3 decimals are identical.

The spelling of 6431390541 in words is "six billion, four hundred thirty-one million, three hundred ninety thousand, five hundred forty-one".