23013012440 has 64 divisors (see below), whose sum is σ = 58308664320. Its totient is φ = 8098416000.

The previous prime is 23013012413. The next prime is 23013012443. The reversal of 23013012440 is 4421031032.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013012443) 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, 829946 + ... + 857225.

It is an arithmetic number, because the mean of its divisors is an integer number (911072880).

Almost surely, 2^23013012440 is an apocalyptic number.

23013012440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23013012440 is an abundant number, since it is smaller than the sum of its proper divisors (35295651880).

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

23013012440 is a wasteful number, since it uses less digits than its factorization.

23013012440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687224 (or 1687220 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23013012440 its reverse (4421031032), we get a palindrome (27434043472).

The spelling of 23013012440 in words is "twenty-three billion, thirteen million, twelve thousand, four hundred forty".