132431431 has 4 divisors (see below), whose sum is σ = 144470664. Its totient is φ = 120392200.

The previous prime is 132431423. The next prime is 132431441. The reversal of 132431431 is 134134231.

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

It is a cyclic number.

It is not a de Polignac number, because 132431431 - 2³ = 132431423 is a prime.

It is a super-2 number, since 2×132431431² = 35076167833415522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132431441) 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, 6019600 + ... + 6019621.

It is an arithmetic number, because the mean of its divisors is an integer number (36117666).

Almost surely, 2^132431431 is an apocalyptic number.

132431431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

132431431 is a deficient number, since it is larger than the sum of its proper divisors (12039233).

132431431 is a wasteful number, since it uses less digits than its factorization.

132431431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12039232.

The product of its digits is 864, while the sum is 22.

The square root of 132431431 is about 11507.8856007522. The cubic root of 132431431 is about 509.7184541101.

Adding to 132431431 its reverse (134134231), we get a palindrome (266565662).

The spelling of 132431431 in words is "one hundred thirty-two million, four hundred thirty-one thousand, four hundred thirty-one".