131312422 has 8 divisors (see below), whose sum is σ = 201772872. Its totient is φ = 64054800.

The previous prime is 131312417. The next prime is 131312449. The reversal of 131312422 is 224213131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×131312422³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131312422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800604 + ... + 800767.

It is an arithmetic number, because the mean of its divisors is an integer number (25221609).

Almost surely, 2^131312422 is an apocalyptic number.

131312422 is a deficient number, since it is larger than the sum of its proper divisors (70460450).

131312422 is a wasteful number, since it uses less digits than its factorization.

131312422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601414.

The product of its digits is 288, while the sum is 19.

The square root of 131312422 is about 11459.1632329765. The cubic root of 131312422 is about 508.2787313444.

Adding to 131312422 its reverse (224213131), we get a palindrome (355525553).

The spelling of 131312422 in words is "one hundred thirty-one million, three hundred twelve thousand, four hundred twenty-two".