23211211309 has 8 divisors (see below), whose sum is σ = 27269115552. Its totient is φ = 19477939440.

The previous prime is 23211211291. The next prime is 23211211393. The reversal of 23211211309 is 90311211232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23211211309 - 2¹³ = 23211203117 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 (23211211109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81157939 + ... + 81158224.

It is an arithmetic number, because the mean of its divisors is an integer number (3408639444).

Almost surely, 2^23211211309 is an apocalyptic number.

It is an amenable number.

23211211309 is a deficient number, since it is larger than the sum of its proper divisors (4057904243).

23211211309 is a wasteful number, since it uses less digits than its factorization.

23211211309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162316187.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 23211211309 in words is "twenty-three billion, two hundred eleven million, two hundred eleven thousand, three hundred nine".