131110220 has 24 divisors (see below), whose sum is σ = 275565024. Its totient is φ = 52399616.

The previous prime is 131110219. The next prime is 131110237. The reversal of 131110220 is 22011131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32009 + ... + 35871.

It is an arithmetic number, because the mean of its divisors is an integer number (11481876).

Almost surely, 2^131110220 is an apocalyptic number.

131110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131110220 is an abundant number, since it is smaller than the sum of its proper divisors (144454804).

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

131110220 is a wasteful number, since it uses less digits than its factorization.

131110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569 (or 5567 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 131110220 is about 11450.3371129413. The cubic root of 131110220 is about 508.0177055850.

Adding to 131110220 its reverse (22011131), we get a palindrome (153121351).

The spelling of 131110220 in words is "one hundred thirty-one million, one hundred ten thousand, two hundred twenty".