23156430001 has 4 divisors (see below), whose sum is σ = 23164700004. Its totient is φ = 23148160000.

The previous prime is 23156429999. The next prime is 23156430007. The reversal of 23156430001 is 10003465132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16946832400 + 6209597601 = 130180^2 + 78801^2 .

It is a cyclic number.

It is not a de Polignac number, because 23156430001 - 2¹ = 23156429999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23156430007) 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, 4130800 + ... + 4136401.

It is an arithmetic number, because the mean of its divisors is an integer number (5791175001).

Almost surely, 2^23156430001 is an apocalyptic number.

It is an amenable number.

23156430001 is a deficient number, since it is larger than the sum of its proper divisors (8270003).

23156430001 is an equidigital number, since it uses as much as digits as its factorization.

23156430001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270002.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 23156430001 its reverse (10003465132), we get a palindrome (33159895133).

The spelling of 23156430001 in words is "twenty-three billion, one hundred fifty-six million, four hundred thirty thousand, one".