16256431 has 8 divisors (see below), whose sum is σ = 17235584. Its totient is φ = 15305760.

The previous prime is 16256413. The next prime is 16256483. The reversal of 16256431 is 13465261.

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

It is a cyclic number.

It is not a de Polignac number, because 16256431 - 2⁹ = 16255919 is a prime.

It is a super-2 number, since 2×16256431² = 528543097715522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16256431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16256491) 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, 5940 + ... + 8233.

It is an arithmetic number, because the mean of its divisors is an integer number (2154448).

Almost surely, 2^16256431 is an apocalyptic number.

16256431 is a deficient number, since it is larger than the sum of its proper divisors (979153).

16256431 is a wasteful number, since it uses less digits than its factorization.

16256431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14241.

The product of its digits is 4320, while the sum is 28.

The square root of 16256431 is about 4031.9264626230. The cubic root of 16256431 is about 253.3232600257.

The spelling of 16256431 in words is "sixteen million, two hundred fifty-six thousand, four hundred thirty-one".