23281388543 has 16 divisors (see below), whose sum is σ = 26856657984. Its totient is φ = 19769218560.

The previous prime is 23281388539. The next prime is 23281388549. The reversal of 23281388543 is 34588318232.

It is not a de Polignac number, because 23281388543 - 2² = 23281388539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23281388549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338933 + ... + 401793.

It is an arithmetic number, because the mean of its divisors is an integer number (1678541124).

Almost surely, 2^23281388543 is an apocalyptic number.

23281388543 is a deficient number, since it is larger than the sum of its proper divisors (3575269441).

23281388543 is a wasteful number, since it uses less digits than its factorization.

23281388543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63362.

The product of its digits is 1105920, while the sum is 47.

The spelling of 23281388543 in words is "twenty-three billion, two hundred eighty-one million, three hundred eighty-eight thousand, five hundred forty-three".