131323420 has 12 divisors (see below), whose sum is σ = 275779224. Its totient is φ = 52529360.

The previous prime is 131323411. The next prime is 131323441. The reversal of 131323420 is 24323131.

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, 3283066 + ... + 3283105.

It is an arithmetic number, because the mean of its divisors is an integer number (22981602).

Almost surely, 2^131323420 is an apocalyptic number.

131323420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131323420 is an abundant number, since it is smaller than the sum of its proper divisors (144455804).

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

131323420 is a wasteful number, since it uses less digits than its factorization.

131323420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6566180 (or 6566178 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 131323420 is about 11459.6431008998. The cubic root of 131323420 is about 508.2929211506.

Adding to 131323420 its reverse (24323131), we get a palindrome (155646551).

The spelling of 131323420 in words is "one hundred thirty-one million, three hundred twenty-three thousand, four hundred twenty".