23420440334 has 4 divisors (see below), whose sum is σ = 35130660504. Its totient is φ = 11710220166.

The previous prime is 23420440333. The next prime is 23420440361. The reversal of 23420440334 is 43304402432.

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

It is a junction number, because it is equal to n+sod(n) for n = 23420440297 and 23420440306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420440331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5855110082 + ... + 5855110085.

It is an arithmetic number, because the mean of its divisors is an integer number (8782665126).

Almost surely, 2^23420440334 is an apocalyptic number.

23420440334 is a deficient number, since it is larger than the sum of its proper divisors (11710220170).

23420440334 is a wasteful number, since it uses less digits than its factorization.

23420440334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11710220169.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 23420440334 its reverse (43304402432), we get a palindrome (66724842766).

The spelling of 23420440334 in words is "twenty-three billion, four hundred twenty million, four hundred forty thousand, three hundred thirty-four".