131980217 has 2 divisors, whose sum is σ = 131980218. Its totient is φ = 131980216.

The previous prime is 131980207. The next prime is 131980249. The reversal of 131980217 is 712089131.

It is an a-pointer prime, because the next prime (131980249) can be obtained adding 131980217 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118613881 + 13366336 = 10891^2 + 3656^2 .

It is a cyclic number.

It is not a de Polignac number, because 131980217 - 2⁶ = 131980153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131980207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65990108 + 65990109.

It is an arithmetic number, because the mean of its divisors is an integer number (65990109).

Almost surely, 2^131980217 is an apocalyptic number.

It is an amenable number.

131980217 is a deficient number, since it is larger than the sum of its proper divisors (1).

131980217 is an equidigital number, since it uses as much as digits as its factorization.

131980217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 131980217 is about 11488.2643162490. The cubic root of 131980217 is about 509.1388993363.

The spelling of 131980217 in words is "one hundred thirty-one million, nine hundred eighty thousand, two hundred seventeen".