231441013 has 2 divisors, whose sum is σ = 231441014. Its totient is φ = 231441012.

The previous prime is 231440999. The next prime is 231441017. The reversal of 231441013 is 310144132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144168049 + 87272964 = 12007^2 + 9342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231441013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231441017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115720506 + 115720507.

It is an arithmetic number, because the mean of its divisors is an integer number (115720507).

Almost surely, 2^231441013 is an apocalyptic number.

It is an amenable number.

231441013 is a deficient number, since it is larger than the sum of its proper divisors (1).

231441013 is an equidigital number, since it uses as much as digits as its factorization.

231441013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 231441013 is about 15213.1854981131. The cubic root of 231441013 is about 613.9694667696.

Adding to 231441013 its reverse (310144132), we get a palindrome (541585145).

The spelling of 231441013 in words is "two hundred thirty-one million, four hundred forty-one thousand, thirteen".