231311141 has 4 divisors (see below), whose sum is σ = 231367884. Its totient is φ = 231254400.

The previous prime is 231311107. The next prime is 231311153. The reversal of 231311141 is 141113132.

231311141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 131010916 + 100300225 = 11446^2 + 10015^2 .

It is a cyclic number.

It is not a de Polignac number, because 231311141 - 2¹⁰ = 231310117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231314141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21740 + ... + 30581.

It is an arithmetic number, because the mean of its divisors is an integer number (57841971).

Almost surely, 2^231311141 is an apocalyptic number.

It is an amenable number.

231311141 is a deficient number, since it is larger than the sum of its proper divisors (56743).

231311141 is an equidigital number, since it uses as much as digits as its factorization.

231311141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56742.

The product of its digits is 72, while the sum is 17.

The square root of 231311141 is about 15208.9164965819. The cubic root of 231311141 is about 613.8546032874.

Adding to 231311141 its reverse (141113132), we get a palindrome (372424273).

The spelling of 231311141 in words is "two hundred thirty-one million, three hundred eleven thousand, one hundred forty-one".