11531316 has 24 divisors (see below), whose sum is σ = 27415584. Its totient is φ = 3771040.

The previous prime is 11531269. The next prime is 11531339. The reversal of 11531316 is 61313511.

It is a junction number, because it is equal to n+sod(n) for n = 11531292 and 11531301.

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, 8430 + ... + 9701.

It is an arithmetic number, because the mean of its divisors is an integer number (1142316).

Almost surely, 2^11531316 is an apocalyptic number.

It is an amenable number.

11531316 is an abundant number, since it is smaller than the sum of its proper divisors (15884268).

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

11531316 is a wasteful number, since it uses less digits than its factorization.

11531316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18191 (or 18189 counting only the distinct ones).

The product of its digits is 270, while the sum is 21.

The square root of 11531316 is about 3395.7791447619. The cubic root of 11531316 is about 225.9225724792.

Adding to 11531316 its reverse (61313511), we get a palindrome (72844827).

The spelling of 11531316 in words is "eleven million, five hundred thirty-one thousand, three hundred sixteen".