16249331 has 12 divisors (see below), whose sum is σ = 20015208. Its totient is φ = 13108032.

The previous prime is 16249319. The next prime is 16249349. The reversal of 16249331 is 13394261.

It is not a de Polignac number, because 16249331 - 2¹⁰ = 16248307 is a prime.

It is a super-2 number, since 2×16249331² = 528081515895122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16249294 and 16249303.

It is not an unprimeable number, because it can be changed into a prime (16249381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8921 + ... + 10586.

It is an arithmetic number, because the mean of its divisors is an integer number (1667934).

Almost surely, 2^16249331 is an apocalyptic number.

16249331 is a deficient number, since it is larger than the sum of its proper divisors (3765877).

16249331 is a wasteful number, since it uses less digits than its factorization.

16249331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19538 (or 19531 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 16249331 is about 4031.0458940578. The cubic root of 16249331 is about 253.2863749912.

The spelling of 16249331 in words is "sixteen million, two hundred forty-nine thousand, three hundred thirty-one".