3101939 has 4 divisors (see below), whose sum is σ = 3284424. Its totient is φ = 2919456.

The previous prime is 3101897. The next prime is 3101947. The reversal of 3101939 is 9391013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9391013 = 89 ⋅105517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3101939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3101999) 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, 91217 + ... + 91250.

It is an arithmetic number, because the mean of its divisors is an integer number (821106).

Almost surely, 2^3101939 is an apocalyptic number.

3101939 is a deficient number, since it is larger than the sum of its proper divisors (182485).

3101939 is a wasteful number, since it uses less digits than its factorization.

3101939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182484.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 3101939 is about 1761.2322390872. The cubic root of 3101939 is about 145.8403678421.

The spelling of 3101939 in words is "three million, one hundred one thousand, nine hundred thirty-nine".