231310433 has 2 divisors, whose sum is σ = 231310434. Its totient is φ = 231310432.

The previous prime is 231310411. The next prime is 231310441. The reversal of 231310433 is 334013132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158583649 + 72726784 = 12593^2 + 8528^2 .

It is a cyclic number.

It is not a de Polignac number, because 231310433 - 2⁶ = 231310369 is a prime.

It is not a weakly prime, because it can be changed into another prime (231310463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655216 + 115655217.

It is an arithmetic number, because the mean of its divisors is an integer number (115655217).

Almost surely, 2^231310433 is an apocalyptic number.

It is an amenable number.

231310433 is a deficient number, since it is larger than the sum of its proper divisors (1).

231310433 is an equidigital number, since it uses as much as digits as its factorization.

231310433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 231310433 is about 15208.8932207442. The cubic root of 231310433 is about 613.8539769888.

Adding to 231310433 its reverse (334013132), we get a palindrome (565323565).

The spelling of 231310433 in words is "two hundred thirty-one million, three hundred ten thousand, four hundred thirty-three".