16696431 has 48 divisors (see below), whose sum is σ = 27293760. Its totient is φ = 9784320.

The previous prime is 16696429. The next prime is 16696441. The reversal of 16696431 is 13469661.

16696431 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 643 + 1 = 666.

It is not a de Polignac number, because 16696431 - 2¹ = 16696429 is a prime.

It is a super-2 number, since 2×16696431² = 557541616275522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16696441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235126 + ... + 235196.

It is an arithmetic number, because the mean of its divisors is an integer number (568620).

Almost surely, 2^16696431 is an apocalyptic number.

16696431 is a deficient number, since it is larger than the sum of its proper divisors (10597329).

16696431 is a wasteful number, since it uses less digits than its factorization.

16696431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 173 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 16696431 is about 4086.1266500196. The cubic root of 16696431 is about 255.5884449654.

It can be divided in two parts, 1669 and 6431, that added together give a square (8100 = 90²).

The spelling of 16696431 in words is "sixteen million, six hundred ninety-six thousand, four hundred thirty-one".