23012043420 has 96 divisors (see below), whose sum is σ = 67890170880. Its totient is φ = 5807980800.

The previous prime is 23012043407. The next prime is 23012043469. The reversal of 23012043420 is 2434021032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1248270 + ... + 1266570.

It is an arithmetic number, because the mean of its divisors is an integer number (707189280).

Almost surely, 2^23012043420 is an apocalyptic number.

23012043420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23012043420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33945085440).

23012043420 is an abundant number, since it is smaller than the sum of its proper divisors (44878127460).

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

23012043420 is a wasteful number, since it uses less digits than its factorization.

23012043420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19435 (or 19433 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 23012043420 its reverse (2434021032), we get a palindrome (25446064452).

The spelling of 23012043420 in words is "twenty-three billion, twelve million, forty-three thousand, four hundred twenty".