132513231 has 4 divisors (see below), whose sum is σ = 176684312. Its totient is φ = 88342152.

The previous prime is 132513223. The next prime is 132513247. The reversal of 132513231 is 132315231.

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

It is not a de Polignac number, because 132513231 - 2³ = 132513223 is a prime.

It is a super-2 number, since 2×132513231² = 35119512780118722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132513198 and 132513207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132513131) 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, 22085536 + ... + 22085541.

It is an arithmetic number, because the mean of its divisors is an integer number (44171078).

Almost surely, 2^132513231 is an apocalyptic number.

132513231 is a deficient number, since it is larger than the sum of its proper divisors (44171081).

132513231 is an equidigital number, since it uses as much as digits as its factorization.

132513231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44171080.

The product of its digits is 540, while the sum is 21.

The square root of 132513231 is about 11511.4391367891. The cubic root of 132513231 is about 509.8233798252.

Adding to 132513231 its reverse (132315231), we get a palindrome (264828462).

The spelling of 132513231 in words is "one hundred thirty-two million, five hundred thirteen thousand, two hundred thirty-one".