131422400 has 42 divisors (see below), whose sum is σ = 323385180. Its totient is φ = 52568320.

The previous prime is 131422381. The next prime is 131422453. The reversal of 131422400 is 4224131.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 39470 + ... + 42669.

Almost surely, 2^131422400 is an apocalyptic number.

131422400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131422400 is an abundant number, since it is smaller than the sum of its proper divisors (191962780).

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

131422400 is an equidigital number, since it uses as much as digits as its factorization.

131422400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82161 (or 82146 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 131422400 is about 11463.9609210778. The cubic root of 131422400 is about 508.4205911901.

Adding to 131422400 its reverse (4224131), we get a palindrome (135646531).

The spelling of 131422400 in words is "one hundred thirty-one million, four hundred twenty-two thousand, four hundred".