231041137 has 4 divisors (see below), whose sum is σ = 231186340. Its totient is φ = 230895936.

The previous prime is 231041123. The next prime is 231041149. The reversal of 231041137 is 731140132.

231041137 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 111598096 + 119443041 = 10564^2 + 10929^2 .

It is a cyclic number.

It is not a de Polignac number, because 231041137 - 2¹¹ = 231039089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231041117) 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, 70188 + ... + 73405.

It is an arithmetic number, because the mean of its divisors is an integer number (57796585).

Almost surely, 2^231041137 is an apocalyptic number.

It is an amenable number.

231041137 is a deficient number, since it is larger than the sum of its proper divisors (145203).

231041137 is a wasteful number, since it uses less digits than its factorization.

231041137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145202.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 231041137 is about 15200.0374012698. The cubic root of 231041137 is about 613.6156643287.

Adding to 231041137 its reverse (731140132), we get a palindrome (962181269).

The spelling of 231041137 in words is "two hundred thirty-one million, forty-one thousand, one hundred thirty-seven".