131133203220 has 48 divisors (see below), whose sum is σ = 367509699648. Its totient is φ = 34936784640.

The previous prime is 131133203219. The next prime is 131133203233. The reversal of 131133203220 is 22302331131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936169 + ... + 1067088.

It is an arithmetic number, because the mean of its divisors is an integer number (7656452076).

Almost surely, 2^131133203220 is an apocalyptic number.

131133203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131133203220 is an abundant number, since it is smaller than the sum of its proper divisors (236376496428).

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

131133203220 is a wasteful number, since it uses less digits than its factorization.

131133203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004360 (or 2004358 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 131133203220 its reverse (22302331131), we get a palindrome (153435534351).

The spelling of 131133203220 in words is "one hundred thirty-one billion, one hundred thirty-three million, two hundred three thousand, two hundred twenty".