132931591 has 4 divisors (see below), whose sum is σ = 143157112. Its totient is φ = 122706072.

The previous prime is 132931573. The next prime is 132931637. The reversal of 132931591 is 195139231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132931591 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 (132931541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5112741 + ... + 5112766.

It is an arithmetic number, because the mean of its divisors is an integer number (35789278).

Almost surely, 2^132931591 is an apocalyptic number.

132931591 is a deficient number, since it is larger than the sum of its proper divisors (10225521).

132931591 is a wasteful number, since it uses less digits than its factorization.

132931591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10225520.

The product of its digits is 7290, while the sum is 34.

The square root of 132931591 is about 11529.5963068964. The cubic root of 132931591 is about 510.3593404991.

It can be divided in two parts, 13293 and 1591, that added together give a square (14884 = 122²).

The spelling of 132931591 in words is "one hundred thirty-two million, nine hundred thirty-one thousand, five hundred ninety-one".