131220300 has 36 divisors (see below), whose sum is σ = 379664936. Its totient is φ = 34992000.

The previous prime is 131220293. The next prime is 131220329. The reversal of 131220300 is 3022131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 11 ways as a sum of consecutive naturals, for example, 218401 + ... + 219000.

Almost surely, 2^131220300 is an apocalyptic number.

131220300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131220300 is an abundant number, since it is smaller than the sum of its proper divisors (248444636).

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

131220300 is a wasteful number, since it uses less digits than its factorization.

131220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437418 (or 437411 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 131220300 is about 11455.1429497846. The cubic root of 131220300 is about 508.1598428531.

Adding to 131220300 its reverse (3022131), we get a palindrome (134242431).

It can be divided in two parts, 1312 and 20300, that added together give a palindrome (21612).

The spelling of 131220300 in words is "one hundred thirty-one million, two hundred twenty thousand, three hundred".