131200233220 has 36 divisors (see below), whose sum is σ = 320503429260. Its totient is φ = 44982936768.

The previous prime is 131200233211. The next prime is 131200233337. The reversal of 131200233220 is 22332002131.

It can be written as a sum of positive squares in 2 ways, for example, as 46410946624 + 84789286596 = 215432^2 + 291186^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66937915 + ... + 66939874.

It is an arithmetic number, because the mean of its divisors is an integer number (8902873035).

Almost surely, 2^131200233220 is an apocalyptic number.

131200233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131200233220 is an abundant number, since it is smaller than the sum of its proper divisors (189303196040).

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

131200233220 is a wasteful number, since it uses less digits than its factorization.

131200233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133877812 (or 133877803 counting only the distinct ones).

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

Adding to 131200233220 its reverse (22332002131), we get a palindrome (153532235351).

The spelling of 131200233220 in words is "one hundred thirty-one billion, two hundred million, two hundred thirty-three thousand, two hundred twenty".