131236422 has 8 divisors (see below), whose sum is σ = 262472856. Its totient is φ = 43745472.

The previous prime is 131236421. The next prime is 131236429. The reversal of 131236422 is 224632131.

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

131236422 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 131236392 and 131236401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131236421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10936363 + ... + 10936374.

It is an arithmetic number, because the mean of its divisors is an integer number (32809107).

Almost surely, 2^131236422 is an apocalyptic number.

131236422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131236422 is a wasteful number, since it uses less digits than its factorization.

131236422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21872742.

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

The square root of 131236422 is about 11455.8466295599. The cubic root of 131236422 is about 508.1806531939.

Adding to 131236422 its reverse (224632131), we get a palindrome (355868553).

The spelling of 131236422 in words is "one hundred thirty-one million, two hundred thirty-six thousand, four hundred twenty-two".