16031697 has 36 divisors (see below), whose sum is σ = 25390128. Its totient is φ = 8921600.

The previous prime is 16031689. The next prime is 16031723. The reversal of 16031697 is 79613061.

It is not a de Polignac number, because 16031697 - 2³ = 16031689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (16031627) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 390997 + ... + 391037.

Almost surely, 2^16031697 is an apocalyptic number.

16031697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16031697 is a deficient number, since it is larger than the sum of its proper divisors (9358431).

16031697 is a wasteful number, since it uses less digits than its factorization.

16031697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 16031697 is about 4003.9601646370. The cubic root of 16031697 is about 252.1504990406.

Multiplying 16031697 by its sum of digits (33), we get a square (529046001 = 23001²).

16031697 divided by its sum of digits (33) gives a square (485809 = 697²).

The spelling of 16031697 in words is "sixteen million, thirty-one thousand, six hundred ninety-seven".