231033023261 has 2 divisors, whose sum is σ = 231033023262. Its totient is φ = 231033023260.

The previous prime is 231033023237. The next prime is 231033023317. The reversal of 231033023261 is 162320330132.

It is a happy number.

231033023261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167178765625 + 63854257636 = 408875^2 + 252694^2 .

It is a cyclic number.

It is not a de Polignac number, because 231033023261 - 2³⁴ = 213853154077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231033023261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231033023461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115516511630 + 115516511631.

It is an arithmetic number, because the mean of its divisors is an integer number (115516511631).

Almost surely, 2^231033023261 is an apocalyptic number.

It is an amenable number.

231033023261 is a deficient number, since it is larger than the sum of its proper divisors (1).

231033023261 is an equidigital number, since it uses as much as digits as its factorization.

231033023261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 231033023261 its reverse (162320330132), we get a palindrome (393353353393).

The spelling of 231033023261 in words is "two hundred thirty-one billion, thirty-three million, twenty-three thousand, two hundred sixty-one".