131220522032 has 40 divisors (see below), whose sum is σ = 257279068800. Its totient is φ = 64826972672.

The previous prime is 131220522031. The next prime is 131220522067. The reversal of 131220522032 is 230225022131.

It is a junction number, because it is equal to n+sod(n) for n = 131220521989 and 131220522007.

It is not an unprimeable number, because it can be changed into a prime (131220522031) 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, 2017118 + ... + 2081154.

It is an arithmetic number, because the mean of its divisors is an integer number (6431976720).

Almost surely, 2^131220522032 is an apocalyptic number.

It is an amenable number.

131220522032 is a deficient number, since it is larger than the sum of its proper divisors (126058546768).

131220522032 is a wasteful number, since it uses less digits than its factorization.

131220522032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65573 (or 65567 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 131220522032 its reverse (230225022131), we get a palindrome (361445544163).

The spelling of 131220522032 in words is "one hundred thirty-one billion, two hundred twenty million, five hundred twenty-two thousand, thirty-two".