13131422 has 4 divisors (see below), whose sum is σ = 19697136. Its totient is φ = 6565710.

The previous prime is 13131421. The next prime is 13131449. The reversal of 13131422 is 22413131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13131422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282854 + ... + 3282857.

It is an arithmetic number, because the mean of its divisors is an integer number (4924284).

Almost surely, 2^13131422 is an apocalyptic number.

13131422 is a deficient number, since it is larger than the sum of its proper divisors (6565714).

13131422 is an equidigital number, since it uses as much as digits as its factorization.

13131422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565713.

The product of its digits is 144, while the sum is 17.

The square root of 13131422 is about 3623.7303983602. The cubic root of 13131422 is about 235.9231651627.

Adding to 13131422 its reverse (22413131), we get a palindrome (35544553).

The spelling of 13131422 in words is "thirteen million, one hundred thirty-one thousand, four hundred twenty-two".