131400220 has 24 divisors (see below), whose sum is σ = 315360864. Its totient is φ = 45051456.

The previous prime is 131400211. The next prime is 131400221. The reversal of 131400220 is 22004131.

It is a self number, because there is not a number n which added to its sum of digits gives 131400220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131400221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469147 + ... + 469426.

It is an arithmetic number, because the mean of its divisors is an integer number (13140036).

Almost surely, 2^131400220 is an apocalyptic number.

131400220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131400220 is an abundant number, since it is smaller than the sum of its proper divisors (183960644).

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

131400220 is a wasteful number, since it uses less digits than its factorization.

131400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938589 (or 938587 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 131400220 is about 11462.9935008269. The cubic root of 131400220 is about 508.3919877375.

Adding to 131400220 its reverse (22004131), we get a palindrome (153404351).

The spelling of 131400220 in words is "one hundred thirty-one million, four hundred thousand, two hundred twenty".