131301220 has 24 divisors (see below), whose sum is σ = 275998464. Its totient is φ = 52469856.

The previous prime is 131301199. The next prime is 131301259. The reversal of 131301220 is 22103131.

It is a self number, because there is not a number n which added to its sum of digits gives 131301220.

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, 23629 + ... + 28651.

It is an arithmetic number, because the mean of its divisors is an integer number (11499936).

Almost surely, 2^131301220 is an apocalyptic number.

131301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131301220 is an abundant number, since it is smaller than the sum of its proper divisors (144697244).

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

131301220 is a wasteful number, since it uses less digits than its factorization.

131301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339 (or 6337 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 131301220 is about 11458.6744434075. The cubic root of 131301220 is about 508.2642775195.

Adding to 131301220 its reverse (22103131), we get a palindrome (153404351).

The spelling of 131301220 in words is "one hundred thirty-one million, three hundred one thousand, two hundred twenty".