23403304451 has 4 divisors (see below), whose sum is σ = 23403610512.
Its totient is φ = 23402998392.
The previous prime is 23403304411. The next prime is 23403304459. The reversal of 23403304451 is 15440330432.
Adding to 23403304451 its reverse (15440330432), we get a palindrome (38843634883).
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 23403304451 - 226 = 23336195587 is a prime.
It is a super-2 number, since 2×234033044512 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (23403304459) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70730 + ... + 227616.
It is an arithmetic number, because the mean of its divisors is an integer number (5850902628).
Almost surely, 223403304451 is an apocalyptic number.
23403304451 is a deficient number, since it is larger than the sum of its proper divisors (306061).
23403304451 is a wasteful number, since it uses less digits than its factorization.
23403304451 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 306060.
The product of its (nonzero) digits is 17280, while the sum is 29.
The spelling of 23403304451 in words is "twenty-three billion, four hundred three million, three hundred four thousand, four hundred fifty-one".