23430421015 has 4 divisors (see below), whose sum is σ = 28116505224. Its totient is φ = 18744336808.

The previous prime is 23430421013. The next prime is 23430421033. The reversal of 23430421015 is 51012403432.

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 23430421015 - 2¹ = 23430421013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23430421013) 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, 2343042097 + ... + 2343042106.

It is an arithmetic number, because the mean of its divisors is an integer number (7029126306).

Almost surely, 2^23430421015 is an apocalyptic number.

23430421015 is a deficient number, since it is larger than the sum of its proper divisors (4686084209).

23430421015 is an equidigital number, since it uses as much as digits as its factorization.

23430421015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4686084208.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 23430421015 its reverse (51012403432), we get a palindrome (74442824447).

The spelling of 23430421015 in words is "twenty-three billion, four hundred thirty million, four hundred twenty-one thousand, fifteen".