132431311 has 4 divisors (see below), whose sum is σ = 139401400. Its totient is φ = 125461224.

The previous prime is 132431293. The next prime is 132431333. The reversal of 132431311 is 113134231.

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 132431311 - 2⁵ = 132431279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 6970069 = 132431311 / (1 + 3 + 2 + 4 + 3 + 1 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132431381) 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 3 ways as a sum of consecutive naturals, for example, 3485016 + ... + 3485053.

It is an arithmetic number, because the mean of its divisors is an integer number (34850350).

Almost surely, 2^132431311 is an apocalyptic number.

132431311 is a deficient number, since it is larger than the sum of its proper divisors (6970089).

132431311 is an equidigital number, since it uses as much as digits as its factorization.

132431311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6970088.

The product of its digits is 216, while the sum is 19.

The square root of 132431311 is about 11507.8803869349. The cubic root of 132431311 is about 509.7183001532.

Adding to 132431311 its reverse (113134231), we get a palindrome (245565542).

The spelling of 132431311 in words is "one hundred thirty-two million, four hundred thirty-one thousand, three hundred eleven".