6407431 has 2 divisors, whose sum is σ = 6407432. Its totient is φ = 6407430.

The previous prime is 6407417. The next prime is 6407441. The reversal of 6407431 is 1347046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6407431 - 2⁹ = 6406919 is a prime.

It is a super-2 number, since 2×6407431² = 82110344039522, which contains 22 as substring.

6407431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6407396 and 6407405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6407441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203715 + 3203716.

It is an arithmetic number, because the mean of its divisors is an integer number (3203716).

Almost surely, 2^6407431 is an apocalyptic number.

6407431 is a deficient number, since it is larger than the sum of its proper divisors (1).

6407431 is an equidigital number, since it uses as much as digits as its factorization.

6407431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 6407431 is about 2531.2903823939. The cubic root of 6407431 is about 185.7353831484.

The spelling of 6407431 in words is "six million, four hundred seven thousand, four hundred thirty-one".