132305231 has 4 divisors (see below), whose sum is σ = 132898752. Its totient is φ = 131711712.

The previous prime is 132305207. The next prime is 132305233. The reversal of 132305231 is 132503231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132503231 = 7 ⋅18929033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132305231 is a prime.

It is a super-2 number, since 2×132305231² = 35009348299926722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132305233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296426 + ... + 296871.

It is an arithmetic number, because the mean of its divisors is an integer number (33224688).

Almost surely, 2^132305231 is an apocalyptic number.

132305231 is a deficient number, since it is larger than the sum of its proper divisors (593521).

132305231 is an equidigital number, since it uses as much as digits as its factorization.

132305231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593520.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 132305231 is about 11502.4010971623. The cubic root of 132305231 is about 509.5564912678.

Adding to 132305231 its reverse (132503231), we get a palindrome (264808462).

The spelling of 132305231 in words is "one hundred thirty-two million, three hundred five thousand, two hundred thirty-one".