131980221 has 24 divisors (see below), whose sum is σ = 196580384. Its totient is φ = 85263840.

The previous prime is 131980217. The next prime is 131980249. The reversal of 131980221 is 122089131.

It is not a de Polignac number, because 131980221 - 2² = 131980217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131980021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101586 + ... + 102876.

Almost surely, 2^131980221 is an apocalyptic number.

It is an amenable number.

131980221 is a deficient number, since it is larger than the sum of its proper divisors (64600163).

131980221 is a wasteful number, since it uses less digits than its factorization.

131980221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 131980221 is about 11488.2644903397. The cubic root of 131980221 is about 509.1389044799.

The spelling of 131980221 in words is "one hundred thirty-one million, nine hundred eighty thousand, two hundred twenty-one".