6387431 has 8 divisors (see below), whose sum is σ = 6625584. Its totient is φ = 6153280.

The previous prime is 6387413. The next prime is 6387449. The reversal of 6387431 is 1347836.

It is an interprime number because it is at equal distance from previous prime (6387413) and next prime (6387449).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6387431 - 2²² = 2193127 is a prime.

It is a super-2 number, since 2×6387431² = 81598549559522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6387131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2465 + ... + 4341.

It is an arithmetic number, because the mean of its divisors is an integer number (828198).

Almost surely, 2^6387431 is an apocalyptic number.

6387431 is a deficient number, since it is larger than the sum of its proper divisors (238153).

6387431 is a wasteful number, since it uses less digits than its factorization.

6387431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001.

The product of its digits is 12096, while the sum is 32.

The square root of 6387431 is about 2527.3367405235. The cubic root of 6387431 is about 185.5419317543.

The spelling of 6387431 in words is "six million, three hundred eighty-seven thousand, four hundred thirty-one".