23321399971 has 2 divisors, whose sum is σ = 23321399972. Its totient is φ = 23321399970.

The previous prime is 23321399929. The next prime is 23321400019. The reversal of 23321399971 is 17999312332.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23321399971 - 2¹⁵ = 23321367203 is a prime.

It is not a weakly prime, because it can be changed into another prime (23321399911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660699985 + 11660699986.

It is an arithmetic number, because the mean of its divisors is an integer number (11660699986).

Almost surely, 2^23321399971 is an apocalyptic number.

23321399971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321399971 is an equidigital number, since it uses as much as digits as its factorization.

23321399971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 49.

The spelling of 23321399971 in words is "twenty-three billion, three hundred twenty-one million, three hundred ninety-nine thousand, nine hundred seventy-one".