231040441 has 2 divisors, whose sum is σ = 231040442. Its totient is φ = 231040440.

The previous prime is 231040423. The next prime is 231040471. The reversal of 231040441 is 144040132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231040000 + 441 = 15200^2 + 21^2 .

It is a cyclic number.

It is not a de Polignac number, because 231040441 - 2¹⁷ = 230909369 is a prime.

It is not a weakly prime, because it can be changed into another prime (231040471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115520220 + 115520221.

It is an arithmetic number, because the mean of its divisors is an integer number (115520221).

Almost surely, 2^231040441 is an apocalyptic number.

It is an amenable number.

231040441 is a deficient number, since it is larger than the sum of its proper divisors (1).

231040441 is an equidigital number, since it uses as much as digits as its factorization.

231040441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 231040441 is about 15200.0145065720. The cubic root of 231040441 is about 613.6150481658.

Adding to 231040441 its reverse (144040132), we get a palindrome (375080573).

The spelling of 231040441 in words is "two hundred thirty-one million, forty thousand, four hundred forty-one".