3139231 has 2 divisors, whose sum is σ = 3139232. Its totient is φ = 3139230.

The previous prime is 3139207. The next prime is 3139259. The reversal of 3139231 is 1329313.

It is a weak prime.

It is an emirp because it is prime and its reverse (1329313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3139231 is a prime.

It is a super-2 number, since 2×3139231² = 19709542542722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3139261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569615 + 1569616.

It is an arithmetic number, because the mean of its divisors is an integer number (1569616).

Almost surely, 2^3139231 is an apocalyptic number.

3139231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3139231 is an equidigital number, since it uses as much as digits as its factorization.

3139231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 22.

The square root of 3139231 is about 1771.7875154770. The cubic root of 3139231 is about 146.4224799256.

The spelling of 3139231 in words is "three million, one hundred thirty-nine thousand, two hundred thirty-one".