23212012013 has 4 divisors (see below), whose sum is σ = 23253241728. Its totient is φ = 23170782300.

The previous prime is 23212011997. The next prime is 23212012081. The reversal of 23212012013 is 31021021232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23212012013 - 2⁴ = 23212011997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23212011982 and 23212012000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212002013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20614013 + ... + 20615138.

It is an arithmetic number, because the mean of its divisors is an integer number (5813310432).

Almost surely, 2^23212012013 is an apocalyptic number.

It is an amenable number.

23212012013 is a deficient number, since it is larger than the sum of its proper divisors (41229715).

23212012013 is an equidigital number, since it uses as much as digits as its factorization.

23212012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41229714.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23212012013 its reverse (31021021232), we get a palindrome (54233033245).

The spelling of 23212012013 in words is "twenty-three billion, two hundred twelve million, twelve thousand, thirteen".