23013215111 has 4 divisors (see below), whose sum is σ = 23024845800. Its totient is φ = 23001584424.

The previous prime is 23013215101. The next prime is 23013215143. The reversal of 23013215111 is 11151231032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23013215111 - 2⁶ = 23013215047 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 (23013215101) 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, 5812376 + ... + 5816333.

It is an arithmetic number, because the mean of its divisors is an integer number (5756211450).

Almost surely, 2^23013215111 is an apocalyptic number.

23013215111 is a deficient number, since it is larger than the sum of its proper divisors (11630689).

23013215111 is a wasteful number, since it uses less digits than its factorization.

23013215111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11630688.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 23013215111 its reverse (11151231032), we get a palindrome (34164446143).

The spelling of 23013215111 in words is "twenty-three billion, thirteen million, two hundred fifteen thousand, one hundred eleven".