16897311 has 6 divisors (see below), whose sum is σ = 24407240. Its totient is φ = 11264868.

The previous prime is 16897291. The next prime is 16897313. The reversal of 16897311 is 11379861.

It is not a de Polignac number, because 16897311 - 2²² = 12703007 is a prime.

It is a super-3 number, since 3×16897311³ (a number of 23 digits) contains 333 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 (16897313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 938731 + ... + 938748.

Almost surely, 2^16897311 is an apocalyptic number.

16897311 is a deficient number, since it is larger than the sum of its proper divisors (7509929).

16897311 is a wasteful number, since it uses less digits than its factorization.

16897311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877485 (or 1877482 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 16897311 is about 4110.6338927226. The cubic root of 16897311 is about 256.6093830296.

It can be divided in two parts, 168 and 97311, that added together give a palindrome (97479).

The spelling of 16897311 in words is "sixteen million, eight hundred ninety-seven thousand, three hundred eleven".