131334232220 has 12 divisors (see below), whose sum is σ = 275801887704. Its totient is φ = 52533692880.

The previous prime is 131334232219. The next prime is 131334232223. The reversal of 131334232220 is 22232433131.

It is a happy number.

It is a super-2 number, since 2×131334232220² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131334232220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131334232223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3283355786 + ... + 3283355825.

It is an arithmetic number, because the mean of its divisors is an integer number (22983490642).

Almost surely, 2^131334232220 is an apocalyptic number.

131334232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131334232220 is an abundant number, since it is smaller than the sum of its proper divisors (144467655484).

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

131334232220 is a wasteful number, since it uses less digits than its factorization.

131334232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6566711620 (or 6566711618 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 131334232220 its reverse (22232433131), we get a palindrome (153566665351).

The spelling of 131334232220 in words is "one hundred thirty-one billion, three hundred thirty-four million, two hundred thirty-two thousand, two hundred twenty".