13131322 has 4 divisors (see below), whose sum is σ = 19696986. Its totient is φ = 6565660.

The previous prime is 13131319. The next prime is 13131329. The reversal of 13131322 is 22313131.

13131322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7557001 + 5574321 = 2749^2 + 2361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13131296 and 13131305.

It is not an unprimeable number, because it can be changed into a prime (13131329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282829 + ... + 3282832.

Almost surely, 2^13131322 is an apocalyptic number.

13131322 is a deficient number, since it is larger than the sum of its proper divisors (6565664).

13131322 is an equidigital number, since it uses as much as digits as its factorization.

13131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6565663.

The product of its digits is 108, while the sum is 16.

The square root of 13131322 is about 3623.7166003980. The cubic root of 13131322 is about 235.9225662843.

Adding to 13131322 its reverse (22313131), we get a palindrome (35444453).

The spelling of 13131322 in words is "thirteen million, one hundred thirty-one thousand, three hundred twenty-two".