131422404 has 24 divisors (see below), whose sum is σ = 312439680. Its totient is φ = 42980704.

The previous prime is 131422381. The next prime is 131422453. The reversal of 131422404 is 404224131.

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, 102684 + ... + 103955.

It is an arithmetic number, because the mean of its divisors is an integer number (13018320).

Almost surely, 2^131422404 is an apocalyptic number.

It is an amenable number.

131422404 is an abundant number, since it is smaller than the sum of its proper divisors (181017276).

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

131422404 is a wasteful number, since it uses less digits than its factorization.

131422404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206699 (or 206697 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 131422404 is about 11463.9610955376. The cubic root of 131422404 is about 508.4205963482.

Adding to 131422404 its reverse (404224131), we get a palindrome (535646535).

The spelling of 131422404 in words is "one hundred thirty-one million, four hundred twenty-two thousand, four hundred four".