132231431 has 4 divisors (see below), whose sum is σ = 139191000. Its totient is φ = 125271864.

The previous prime is 132231427. The next prime is 132231481. The reversal of 132231431 is 134132231.

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

It is not a de Polignac number, because 132231431 - 2² = 132231427 is a prime.

It is a super-2 number, since 2×132231431² = 34970302688615522, 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 (132231481) 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, 3479756 + ... + 3479793.

It is an arithmetic number, because the mean of its divisors is an integer number (34797750).

Almost surely, 2^132231431 is an apocalyptic number.

132231431 is a deficient number, since it is larger than the sum of its proper divisors (6959569).

132231431 is an equidigital number, since it uses as much as digits as its factorization.

132231431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959568.

The product of its digits is 432, while the sum is 20.

The square root of 132231431 is about 11499.1926238323. The cubic root of 132231431 is about 509.4617299268.

Adding to 132231431 its reverse (134132231), we get a palindrome (266363662).

The spelling of 132231431 in words is "one hundred thirty-two million, two hundred thirty-one thousand, four hundred thirty-one".