23021440271 has 4 divisors (see below), whose sum is σ = 23023088592. Its totient is φ = 23019791952.

The previous prime is 23021440237. The next prime is 23021440331. The reversal of 23021440271 is 17204412032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23021440271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23021440271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021440201) 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 in 3 ways as a sum of consecutive naturals, for example, 803030 + ... + 831203.

It is an arithmetic number, because the mean of its divisors is an integer number (5755772148).

Almost surely, 2^23021440271 is an apocalyptic number.

23021440271 is a deficient number, since it is larger than the sum of its proper divisors (1648321).

23021440271 is a wasteful number, since it uses less digits than its factorization.

23021440271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648320.

The product of its (nonzero) digits is 2688, while the sum is 26.

The spelling of 23021440271 in words is "twenty-three billion, twenty-one million, four hundred forty thousand, two hundred seventy-one".