132231421 has 4 divisors (see below), whose sum is σ = 151121632. Its totient is φ = 113341212.

The previous prime is 132231413. The next prime is 132231427. The reversal of 132231421 is 124132231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124132231 = 2017 ⋅61543.

It is a cyclic number.

It is not a de Polignac number, because 132231421 - 2³ = 132231413 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 (132231427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9445095 + ... + 9445108.

It is an arithmetic number, because the mean of its divisors is an integer number (37780408).

Almost surely, 2^132231421 is an apocalyptic number.

It is an amenable number.

132231421 is a deficient number, since it is larger than the sum of its proper divisors (18890211).

132231421 is an equidigital number, since it uses as much as digits as its factorization.

132231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18890210.

The product of its digits is 288, while the sum is 19.

The square root of 132231421 is about 11499.1921890192. The cubic root of 132231421 is about 509.4617170842.

Adding to 132231421 its reverse (124132231), we get a palindrome (256363652).

The spelling of 132231421 in words is "one hundred thirty-two million, two hundred thirty-one thousand, four hundred twenty-one".