23355240340 has 24 divisors (see below), whose sum is σ = 49495972680. Its totient is φ = 9256387968.

The previous prime is 23355240301. The next prime is 23355240341. The reversal of 23355240340 is 4304255332.

It can be written as a sum of positive squares in 4 ways, for example, as 6996318736 + 16358921604 = 83644^2 + 127902^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23355240341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5354527 + ... + 5358886.

It is an arithmetic number, because the mean of its divisors is an integer number (2062332195).

Almost surely, 2^23355240340 is an apocalyptic number.

23355240340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23355240340 is an abundant number, since it is smaller than the sum of its proper divisors (26140732340).

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

23355240340 is a wasteful number, since it uses less digits than its factorization.

23355240340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10713531 (or 10713529 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 31.

Adding to 23355240340 its reverse (4304255332), we get a palindrome (27659495672).

The spelling of 23355240340 in words is "twenty-three billion, three hundred fifty-five million, two hundred forty thousand, three hundred forty".