131623422 has 16 divisors (see below), whose sum is σ = 300853632. Its totient is φ = 37606680.

The previous prime is 131623399. The next prime is 131623439. The reversal of 131623422 is 224326131.

It is a junction number, because it is equal to n+sod(n) for n = 131623392 and 131623401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1566904 + ... + 1566987.

It is an arithmetic number, because the mean of its divisors is an integer number (18803352).

Almost surely, 2^131623422 is an apocalyptic number.

131623422 is an abundant number, since it is smaller than the sum of its proper divisors (169230210).

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

131623422 is a wasteful number, since it uses less digits than its factorization.

131623422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133903.

The product of its digits is 1728, while the sum is 24.

The square root of 131623422 is about 11472.7251339863. The cubic root of 131623422 is about 508.6796836494.

Adding to 131623422 its reverse (224326131), we get a palindrome (355949553).

The spelling of 131623422 in words is "one hundred thirty-one million, six hundred twenty-three thousand, four hundred twenty-two".