16397031 has 32 divisors (see below), whose sum is σ = 26265600. Its totient is φ = 8902656.

The previous prime is 16397011. The next prime is 16397033. The reversal of 16397031 is 13079361.

It is not a de Polignac number, because 16397031 - 2⁷ = 16396903 is a prime.

It is a super-2 number, since 2×16397031² = 537725251229922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16397031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16397033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36295 + ... + 36743.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^16397031 is an apocalyptic number.

16397031 is a deficient number, since it is larger than the sum of its proper divisors (9868569).

16397031 is a wasteful number, since it uses less digits than its factorization.

16397031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 16397031 is about 4049.3247585246. The cubic root of 16397031 is about 254.0514858328.

The spelling of 16397031 in words is "sixteen million, three hundred ninety-seven thousand, thirty-one".