231235051 has 4 divisors (see below), whose sum is σ = 231288400. Its totient is φ = 231181704.

The previous prime is 231235049. The next prime is 231235057. The reversal of 231235051 is 150532132.

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 231235051 - 2¹ = 231235049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231235057) 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, 19536 + ... + 29053.

It is an arithmetic number, because the mean of its divisors is an integer number (57822100).

Almost surely, 2^231235051 is an apocalyptic number.

231235051 is a deficient number, since it is larger than the sum of its proper divisors (53349).

231235051 is an equidigital number, since it uses as much as digits as its factorization.

231235051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53348.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 231235051 is about 15206.4147977096. The cubic root of 231235051 is about 613.7872865713.

Adding to 231235051 its reverse (150532132), we get a palindrome (381767183).

The spelling of 231235051 in words is "two hundred thirty-one million, two hundred thirty-five thousand, fifty-one".