12313081 has 15 divisors (see below), whose sum is σ = 14027455. Its totient is φ = 10807720.

The previous prime is 12313043. The next prime is 12313097. The reversal of 12313081 is 18031321.

The square root of 12313081 is 3509.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6456681 + 5856400 = 2541^2 + 2420^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12313081 is a prime.

It is a super-2 number, since 2×12313081² = 303223927425122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12313181) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 424575 + ... + 424603.

Almost surely, 2^12313081 is an apocalyptic number.

12313081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12313081 is the 3509-th square number.

12313081 is the 1755-th centered octagonal number.

It is an amenable number.

12313081 is a deficient number, since it is larger than the sum of its proper divisors (1714374).

12313081 is an frugal number, since it uses more digits than its factorization.

12313081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The cubic root of 12313081 is about 230.9168256868.

Multiplying 12313081 by its product of nonzero digits (144), we get a square (1773083664 = 42108²).

The spelling of 12313081 in words is "twelve million, three hundred thirteen thousand, eighty-one".