23421212387 has 2 divisors, whose sum is σ = 23421212388. Its totient is φ = 23421212386.

The previous prime is 23421212357. The next prime is 23421212389. The reversal of 23421212387 is 78321212432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23421212387 - 2¹⁶ = 23421146851 is a prime.

Together with 23421212389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23421212389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710606193 + 11710606194.

It is an arithmetic number, because the mean of its divisors is an integer number (11710606194).

Almost surely, 2^23421212387 is an apocalyptic number.

23421212387 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421212387 is an equidigital number, since it uses as much as digits as its factorization.

23421212387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The spelling of 23421212387 in words is "twenty-three billion, four hundred twenty-one million, two hundred twelve thousand, three hundred eighty-seven".