3161312 has 48 divisors (see below), whose sum is σ = 7765632. Its totient is φ = 1230720.

The previous prime is 3161309. The next prime is 3161321. The reversal of 3161312 is 2131613.

It is a super-2 number, since 2×3161312² = 19987787122688, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1823 + ... + 3105.

It is an arithmetic number, because the mean of its divisors is an integer number (161784).

Almost surely, 2^3161312 is an apocalyptic number.

3161312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3161312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3882816).

3161312 is an abundant number, since it is smaller than the sum of its proper divisors (4604320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3161312 is a wasteful number, since it uses less digits than its factorization.

3161312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1303 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 3161312 is about 1778.0078739983. The cubic root of 3161312 is about 146.7649845830.

Adding to 3161312 its reverse (2131613), we get a palindrome (5292925).

The spelling of 3161312 in words is "three million, one hundred sixty-one thousand, three hundred twelve".