132031981 has 2 divisors, whose sum is σ = 132031982. Its totient is φ = 132031980.

The previous prime is 132031927. The next prime is 132031987. The reversal of 132031981 is 189130231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132020100 + 11881 = 11490^2 + 109^2 .

It is an emirp because it is prime and its reverse (189130231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 132031981 - 2⁷ = 132031853 is a prime.

It is a super-2 number, since 2×132031981² = 34864888013568722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132031987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66015990 + 66015991.

It is an arithmetic number, because the mean of its divisors is an integer number (66015991).

Almost surely, 2^132031981 is an apocalyptic number.

It is an amenable number.

132031981 is a deficient number, since it is larger than the sum of its proper divisors (1).

132031981 is an equidigital number, since it uses as much as digits as its factorization.

132031981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 132031981 is about 11490.5170031640. The cubic root of 132031981 is about 509.2054538088.

The spelling of 132031981 in words is "one hundred thirty-two million, thirty-one thousand, nine hundred eighty-one".