131334220 has 48 divisors (see below), whose sum is σ = 283919328. Its totient is φ = 51010560.

The previous prime is 131334211. The next prime is 131334221. The reversal of 131334220 is 22433131.

It is not an unprimeable number, because it can be changed into a prime (131334221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100612 + ... + 101908.

It is an arithmetic number, because the mean of its divisors is an integer number (5914986).

Almost surely, 2^131334220 is an apocalyptic number.

131334220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131334220 is an abundant number, since it is smaller than the sum of its proper divisors (152585108).

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

131334220 is a wasteful number, since it uses less digits than its factorization.

131334220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 131334220 is about 11460.1143100756. The cubic root of 131334220 is about 508.3068547228.

Adding to 131334220 its reverse (22433131), we get a palindrome (153767351).

The spelling of 131334220 in words is "one hundred thirty-one million, three hundred thirty-four thousand, two hundred twenty".