13131356 has 24 divisors (see below), whose sum is σ = 27646080. Its totient is φ = 5331312.

The previous prime is 13131343. The next prime is 13131359. The reversal of 13131356 is 65313131.

It is a happy number.

13131356 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

13131356 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11810 + ... + 12873.

It is an arithmetic number, because the mean of its divisors is an integer number (1151920).

Almost surely, 2^13131356 is an apocalyptic number.

It is an amenable number.

13131356 is an abundant number, since it is smaller than the sum of its proper divisors (14514724).

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

13131356 is a wasteful number, since it uses less digits than its factorization.

13131356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24713 (or 24711 counting only the distinct ones).

The product of its digits is 810, while the sum is 23.

The square root of 13131356 is about 3623.7212917110. The cubic root of 13131356 is about 235.9227699033.

Adding to 13131356 its reverse (65313131), we get a palindrome (78444487).

The spelling of 13131356 in words is "thirteen million, one hundred thirty-one thousand, three hundred fifty-six".