201233331023 has 2 divisors, whose sum is σ = 201233331024. Its totient is φ = 201233331022.

The previous prime is 201233331017. The next prime is 201233331043. The reversal of 201233331023 is 320133332102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201233331023 is a prime.

It is a super-2 number, since 2×201233331023² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201233331023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201233331043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100616665511 + 100616665512.

It is an arithmetic number, because the mean of its divisors is an integer number (100616665512).

Almost surely, 2^201233331023 is an apocalyptic number.

201233331023 is a deficient number, since it is larger than the sum of its proper divisors (1).

201233331023 is an equidigital number, since it uses as much as digits as its factorization.

201233331023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 201233331023 its reverse (320133332102), we get a palindrome (521366663125).

The spelling of 201233331023 in words is "two hundred one billion, two hundred thirty-three million, three hundred thirty-one thousand, twenty-three".