231432105 has 16 divisors (see below), whose sum is σ = 370560384. Its totient is φ = 123340800.

The previous prime is 231432073. The next prime is 231432121. The reversal of 231432105 is 501234132.

It is not a de Polignac number, because 231432105 - 2⁵ = 231432073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19305 + ... + 28905.

It is an arithmetic number, because the mean of its divisors is an integer number (23160024).

Almost surely, 2^231432105 is an apocalyptic number.

It is an amenable number.

231432105 is a deficient number, since it is larger than the sum of its proper divisors (139128279).

231432105 is a wasteful number, since it uses less digits than its factorization.

231432105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11216.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 231432105 is about 15212.8927229505. The cubic root of 231432105 is about 613.9615895858.

Adding to 231432105 its reverse (501234132), we get a palindrome (732666237).

The spelling of 231432105 in words is "two hundred thirty-one million, four hundred thirty-two thousand, one hundred five".