3391831 has 2 divisors, whose sum is σ = 3391832. Its totient is φ = 3391830.

The previous prime is 3391819. The next prime is 3391853. The reversal of 3391831 is 1381933.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3391831 - 2¹⁵ = 3359063 is a prime.

It is a super-2 number, since 2×3391831² = 23009035065122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3391831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3391331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1695915 + 1695916.

It is an arithmetic number, because the mean of its divisors is an integer number (1695916).

Almost surely, 2^3391831 is an apocalyptic number.

3391831 is a deficient number, since it is larger than the sum of its proper divisors (1).

3391831 is an equidigital number, since it uses as much as digits as its factorization.

3391831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 3391831 is about 1841.6924281758. The cubic root of 3391831 is about 150.2489347961.

The spelling of 3391831 in words is "three million, three hundred ninety-one thousand, eight hundred thirty-one".