13231422 has 24 divisors (see below), whose sum is σ = 29444376. Its totient is φ = 4291056.

The previous prime is 13231411. The next prime is 13231481. The reversal of 13231422 is 22413231.

13231422 is a `hidden beast` number, since 13 + 231 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13231395 and 13231404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9268 + ... + 10599.

It is an arithmetic number, because the mean of its divisors is an integer number (1226849).

Almost surely, 2^13231422 is an apocalyptic number.

13231422 is an abundant number, since it is smaller than the sum of its proper divisors (16212954).

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

13231422 is a wasteful number, since it uses less digits than its factorization.

13231422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19912 (or 19909 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 13231422 is about 3637.5021649478. The cubic root of 13231422 is about 236.5205282641.

Adding to 13231422 its reverse (22413231), we get a palindrome (35644653).

The spelling of 13231422 in words is "thirteen million, two hundred thirty-one thousand, four hundred twenty-two".