23110442420 has 36 divisors (see below), whose sum is σ = 52552333260. Its totient is φ = 8533085184.

The previous prime is 23110442417. The next prime is 23110442429. The reversal of 23110442420 is 2424401132.

It can be written as a sum of positive squares in 6 ways, for example, as 5143184656 + 17967257764 = 71716^2 + 134042^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23110442429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3415325 + ... + 3422084.

It is an arithmetic number, because the mean of its divisors is an integer number (1459787035).

Almost surely, 2^23110442420 is an apocalyptic number.

23110442420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23110442420 is an abundant number, since it is smaller than the sum of its proper divisors (29441890840).

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

23110442420 is a wasteful number, since it uses less digits than its factorization.

23110442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6837444 (or 6837429 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 23110442420 its reverse (2424401132), we get a palindrome (25534843552).

The spelling of 23110442420 in words is "twenty-three billion, one hundred ten million, four hundred forty-two thousand, four hundred twenty".