23403305051 has 32 divisors (see below), whose sum is σ = 29320237440. Its totient is φ = 18214189056.

The previous prime is 23403305047. The next prime is 23403305071. The reversal of 23403305051 is 15050330432.

It is not a de Polignac number, because 23403305051 - 2² = 23403305047 is a prime.

It is a super-2 number, since 2×23403305051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23403305051.

It is not an unprimeable number, because it can be changed into a prime (23403305041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6475721 + ... + 6479333.

It is an arithmetic number, because the mean of its divisors is an integer number (916257420).

Almost surely, 2^23403305051 is an apocalyptic number.

23403305051 is a deficient number, since it is larger than the sum of its proper divisors (5916932389).

23403305051 is a wasteful number, since it uses less digits than its factorization.

23403305051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 23403305051 its reverse (15050330432), we get a palindrome (38453635483).

The spelling of 23403305051 in words is "twenty-three billion, four hundred three million, three hundred five thousand, fifty-one".