2931239 has 4 divisors (see below), whose sum is σ = 2935080. Its totient is φ = 2927400.

The previous prime is 2931223. The next prime is 2931241. The reversal of 2931239 is 9321392.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2931239 - 2⁴ = 2931223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2931209) 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, 344 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (733770).

2^2931239 is an apocalyptic number.

2931239 is a deficient number, since it is larger than the sum of its proper divisors (3841).

2931239 is a wasteful number, since it uses less digits than its factorization.

2931239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840.

The product of its digits is 2916, while the sum is 29.

The square root of 2931239 is about 1712.0861543742. The cubic root of 2931239 is about 143.1145348717.

The spelling of 2931239 in words is "two million, nine hundred thirty-one thousand, two hundred thirty-nine".