131132231011220 has 12 divisors (see below), whose sum is σ = 275377685123604. Its totient is φ = 52452892404480.

The previous prime is 131132231011211. The next prime is 131132231011231. The reversal of 131132231011220 is 22110132231131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56950598019844 + 74181632991376 = 7546562^2 + 8612876^2 .

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, 3278305775261 + ... + 3278305775300.

It is an arithmetic number, because the mean of its divisors is an integer number (22948140426967).

Almost surely, 2^{131132231011220} is an apocalyptic number.

131132231011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131132231011220 is an abundant number, since it is smaller than the sum of its proper divisors (144245454112384).

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

131132231011220 is a wasteful number, since it uses less digits than its factorization.

131132231011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556611550570 (or 6556611550568 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131132231011220 its reverse (22110132231131), we get a palindrome (153242363242351).

The spelling of 131132231011220 in words is "one hundred thirty-one trillion, one hundred thirty-two billion, two hundred thirty-one million, eleven thousand, two hundred twenty".