131033230220 has 24 divisors (see below), whose sum is σ = 276192730800. Its totient is φ = 52218444992.

The previous prime is 131033230193. The next prime is 131033230267. The reversal of 131033230220 is 22032330131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131033230192 and 131033230201.

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, 12172430 + ... + 12183189.

It is an arithmetic number, because the mean of its divisors is an integer number (11508030450).

Almost surely, 2^131033230220 is an apocalyptic number.

131033230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131033230220 is an abundant number, since it is smaller than the sum of its proper divisors (145159500580).

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

131033230220 is a wasteful number, since it uses less digits than its factorization.

131033230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24355897 (or 24355895 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 131033230220 its reverse (22032330131), we get a palindrome (153065560351).

The spelling of 131033230220 in words is "one hundred thirty-one billion, thirty-three million, two hundred thirty thousand, two hundred twenty".