23130420004543 has 4 divisors (see below), whose sum is σ = 23130481244680. Its totient is φ = 23130358764408.

The previous prime is 23130420004511. The next prime is 23130420004547. The reversal of 23130420004543 is 34540002403132.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23130420004543 - 2⁵ = 23130420004511 is a prime.

It is a super-2 number, since 2×23130420004543² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130420004547) 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, 30049980 + ... + 30810097.

It is an arithmetic number, because the mean of its divisors is an integer number (5782620311170).

Almost surely, 2^{23130420004543} is an apocalyptic number.

23130420004543 is a deficient number, since it is larger than the sum of its proper divisors (61240137).

23130420004543 is an equidigital number, since it uses as much as digits as its factorization.

23130420004543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61240136.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 23130420004543 its reverse (34540002403132), we get a palindrome (57670422407675).

The spelling of 23130420004543 in words is "twenty-three trillion, one hundred thirty billion, four hundred twenty million, four thousand, five hundred forty-three".