16939031 has 4 divisors (see below), whose sum is σ = 17026992. Its totient is φ = 16851072.

The previous prime is 16939001. The next prime is 16939037. The reversal of 16939031 is 13093961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13093961 = 17 ⋅770233.

It is a cyclic number.

It is not a de Polignac number, because 16939031 - 2¹⁰ = 16938007 is a prime.

It is a super-2 number, since 2×16939031² = 573861542437922, which contains 22 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 (16939037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43691 + ... + 44076.

It is an arithmetic number, because the mean of its divisors is an integer number (4256748).

Almost surely, 2^16939031 is an apocalyptic number.

16939031 is a deficient number, since it is larger than the sum of its proper divisors (87961).

16939031 is an equidigital number, since it uses as much as digits as its factorization.

16939031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87960.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 16939031 is about 4115.7054073391. The cubic root of 16939031 is about 256.8204017056.

The spelling of 16939031 in words is "sixteen million, nine hundred thirty-nine thousand, thirty-one".