132445431 has 12 divisors (see below), whose sum is σ = 199628208. Its totient is φ = 84457824.

The previous prime is 132445427. The next prime is 132445471. The reversal of 132445431 is 134544231.

It is a happy number.

It is not a de Polignac number, because 132445431 - 2² = 132445427 is a prime.

It is a super-2 number, since 2×132445431² = 35083584385551522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 132445395 and 132445404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132445471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319710 + ... + 320123.

It is an arithmetic number, because the mean of its divisors is an integer number (16635684).

Almost surely, 2^132445431 is an apocalyptic number.

132445431 is a deficient number, since it is larger than the sum of its proper divisors (67182777).

132445431 is a wasteful number, since it uses less digits than its factorization.

132445431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639862 (or 639859 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 132445431 is about 11508.4938632299. The cubic root of 132445431 is about 509.7364151205.

Adding to 132445431 its reverse (134544231), we get a palindrome (266989662).

The spelling of 132445431 in words is "one hundred thirty-two million, four hundred forty-five thousand, four hundred thirty-one".