231113033 has 2 divisors, whose sum is σ = 231113034. Its totient is φ = 231113032.

The previous prime is 231112997. The next prime is 231113041. The reversal of 231113033 is 330311132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147792649 + 83320384 = 12157^2 + 9128^2 .

It is a cyclic number.

It is not a de Polignac number, because 231113033 - 2¹⁰ = 231112009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (231113633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115556516 + 115556517.

It is an arithmetic number, because the mean of its divisors is an integer number (115556517).

Almost surely, 2^231113033 is an apocalyptic number.

It is an amenable number.

231113033 is a deficient number, since it is larger than the sum of its proper divisors (1).

231113033 is an equidigital number, since it uses as much as digits as its factorization.

231113033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 231113033 is about 15202.4022114928. The cubic root of 231113033 is about 613.6793065831.

Adding to 231113033 its reverse (330311132), we get a palindrome (561424165).

The spelling of 231113033 in words is "two hundred thirty-one million, one hundred thirteen thousand, thirty-three".