132787931 has 8 divisors (see below), whose sum is σ = 137251440. Its totient is φ = 128370528.

The previous prime is 132787891. The next prime is 132787939. The reversal of 132787931 is 139787231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132787931 is a prime.

It is a super-2 number, since 2×132787931² = 35265269238521522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132787939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5621 + ... + 17238.

It is an arithmetic number, because the mean of its divisors is an integer number (17156430).

Almost surely, 2^132787931 is an apocalyptic number.

132787931 is a deficient number, since it is larger than the sum of its proper divisors (4463509).

132787931 is a wasteful number, since it uses less digits than its factorization.

132787931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23053.

The product of its digits is 63504, while the sum is 41.

The square root of 132787931 is about 11523.3645694302. The cubic root of 132787931 is about 510.1754247221.

The spelling of 132787931 in words is "one hundred thirty-two million, seven hundred eighty-seven thousand, nine hundred thirty-one".