23211211312 has 40 divisors (see below), whose sum is σ = 46437027840. Its totient is φ = 11227698240.

The previous prime is 23211211291. The next prime is 23211211393. The reversal of 23211211312 is 21311211232.

It is a super-2 number, since 2×23211211312² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23211211312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2297889 + ... + 2307967.

It is an arithmetic number, because the mean of its divisors is an integer number (1160925696).

Almost surely, 2^23211211312 is an apocalyptic number.

It is an amenable number.

23211211312 is an abundant number, since it is smaller than the sum of its proper divisors (23225816528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23211211312 is a wasteful number, since it uses less digits than its factorization.

23211211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14761 (or 14755 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 23211211312 its reverse (21311211232), we get a palindrome (44522422544).

The spelling of 23211211312 in words is "twenty-three billion, two hundred eleven million, two hundred eleven thousand, three hundred twelve".