132787381 has 2 divisors, whose sum is σ = 132787382. Its totient is φ = 132787380.

The previous prime is 132787351. The next prime is 132787451. The reversal of 132787381 is 183787231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99321156 + 33466225 = 9966^2 + 5785^2 .

It is a cyclic number.

It is not a de Polignac number, because 132787381 - 2⁹ = 132786869 is a prime.

It is a super-2 number, since 2×132787381² = 35264977105678322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132787331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66393690 + 66393691.

It is an arithmetic number, because the mean of its divisors is an integer number (66393691).

Almost surely, 2^132787381 is an apocalyptic number.

It is an amenable number.

132787381 is a deficient number, since it is larger than the sum of its proper divisors (1).

132787381 is an equidigital number, since it uses as much as digits as its factorization.

132787381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 132787381 is about 11523.3407048477. The cubic root of 132787381 is about 510.1747203486.

The spelling of 132787381 in words is "one hundred thirty-two million, seven hundred eighty-seven thousand, three hundred eighty-one".