231245653 has 2 divisors, whose sum is σ = 231245654. Its totient is φ = 231245652.

The previous prime is 231245639. The next prime is 231245659. The reversal of 231245653 is 356542132.

It is a happy number.

231245653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179506404 + 51739249 = 13398^2 + 7193^2 .

It is a cyclic number.

It is not a de Polignac number, because 231245653 - 2⁵ = 231245621 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231245659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115622826 + 115622827.

It is an arithmetic number, because the mean of its divisors is an integer number (115622827).

Almost surely, 2^231245653 is an apocalyptic number.

It is an amenable number.

231245653 is a deficient number, since it is larger than the sum of its proper divisors (1).

231245653 is an equidigital number, since it uses as much as digits as its factorization.

231245653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 231245653 is about 15206.7633965943. The cubic root of 231245653 is about 613.7966670311.

Adding to 231245653 its reverse (356542132), we get a palindrome (587787785).

The spelling of 231245653 in words is "two hundred thirty-one million, two hundred forty-five thousand, six hundred fifty-three".