3161331 has 6 divisors (see below), whose sum is σ = 4566380. Its totient is φ = 2107548.

The previous prime is 3161329. The next prime is 3161339. The reversal of 3161331 is 1331613.

It is not a de Polignac number, because 3161331 - 2¹ = 3161329 is a prime.

It is a super-2 number, since 2×3161331² = 19988027383122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3161339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175621 + ... + 175638.

Almost surely, 2^3161331 is an apocalyptic number.

3161331 is a deficient number, since it is larger than the sum of its proper divisors (1405049).

3161331 is a wasteful number, since it uses less digits than its factorization.

3161331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351265 (or 351262 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 3161331 is about 1778.0132170487. The cubic root of 3161331 is about 146.7652786095.

Adding to 3161331 its reverse (1331613), we get a palindrome (4492944).

The spelling of 3161331 in words is "three million, one hundred sixty-one thousand, three hundred thirty-one".