23031365838 has 16 divisors (see below), whose sum is σ = 49606018896. Its totient is φ = 7086574080.

The previous prime is 23031365827. The next prime is 23031365873. The reversal of 23031365838 is 83856313032.

It is a happy number.

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 23031365838.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147636883 + ... + 147637038.

It is an arithmetic number, because the mean of its divisors is an integer number (3100376181).

Almost surely, 2^23031365838 is an apocalyptic number.

23031365838 is an abundant number, since it is smaller than the sum of its proper divisors (26574653058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23031365838 is a wasteful number, since it uses less digits than its factorization.

23031365838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295273939.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 23031365838 in words is "twenty-three billion, thirty-one million, three hundred sixty-five thousand, eight hundred thirty-eight".