3791231 has 2 divisors, whose sum is σ = 3791232. Its totient is φ = 3791230.

The previous prime is 3791219. The next prime is 3791233. The reversal of 3791231 is 1321973.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3791231 - 2⁶ = 3791167 is a prime.

It is a super-2 number, since 2×3791231² = 28746864990722, which contains 22 as substring.

Together with 3791233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3791231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3791233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1895615 + 1895616.

It is an arithmetic number, because the mean of its divisors is an integer number (1895616).

Almost surely, 2^3791231 is an apocalyptic number.

3791231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3791231 is an equidigital number, since it uses as much as digits as its factorization.

3791231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 26.

The square root of 3791231 is about 1947.1083688383. The cubic root of 3791231 is about 155.9289480292.

The spelling of 3791231 in words is "three million, seven hundred ninety-one thousand, two hundred thirty-one".