23120321047 has 2 divisors, whose sum is σ = 23120321048. Its totient is φ = 23120321046.

The previous prime is 23120320999. The next prime is 23120321089. The reversal of 23120321047 is 74012302132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23120321047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23120321447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560160523 + 11560160524.

It is an arithmetic number, because the mean of its divisors is an integer number (11560160524).

Almost surely, 2^23120321047 is an apocalyptic number.

23120321047 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120321047 is an equidigital number, since it uses as much as digits as its factorization.

23120321047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 23120321047 its reverse (74012302132), we get a palindrome (97132623179).

The spelling of 23120321047 in words is "twenty-three billion, one hundred twenty million, three hundred twenty-one thousand, forty-seven".