23031205245 has 12 divisors (see below), whose sum is σ = 39920755836. Its totient is φ = 12283309440.

The previous prime is 23031205231. The next prime is 23031205261. The reversal of 23031205245 is 54250213032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12787538724 + 10243666521 = 113082^2 + 101211^2 .

It is not a de Polignac number, because 23031205245 - 2⁵ = 23031205213 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 255902236 + ... + 255902325.

It is an arithmetic number, because the mean of its divisors is an integer number (3326729653).

Almost surely, 2^23031205245 is an apocalyptic number.

It is an amenable number.

23031205245 is a deficient number, since it is larger than the sum of its proper divisors (16889550591).

23031205245 is a wasteful number, since it uses less digits than its factorization.

23031205245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511804572 (or 511804569 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 23031205245 its reverse (54250213032), we get a palindrome (77281418277).

The spelling of 23031205245 in words is "twenty-three billion, thirty-one million, two hundred five thousand, two hundred forty-five".