23311212213 has 8 divisors (see below), whose sum is σ = 31175519776. Its totient is φ = 15493856400.

The previous prime is 23311212173. The next prime is 23311212227. The reversal of 23311212213 is 31221211332.

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

It is not a de Polignac number, because 23311212213 - 2²¹ = 23309115061 is a prime.

It is a super-2 number, since 2×23311212213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23311212213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311212293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11736778 + ... + 11738763.

It is an arithmetic number, because the mean of its divisors is an integer number (3896939972).

Almost surely, 2^23311212213 is an apocalyptic number.

It is an amenable number.

23311212213 is a deficient number, since it is larger than the sum of its proper divisors (7864307563).

23311212213 is a wasteful number, since it uses less digits than its factorization.

23311212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23475875.

The product of its digits is 432, while the sum is 21.

Adding to 23311212213 its reverse (31221211332), we get a palindrome (54532423545).

The spelling of 23311212213 in words is "twenty-three billion, three hundred eleven million, two hundred twelve thousand, two hundred thirteen".