111312023212013 has 32 divisors (see below), whose sum is σ = 127463812116480. Its totient is φ = 96428335196160.

The previous prime is 111312023212001. The next prime is 111312023212057. The reversal of 111312023212013 is 310212320213111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111312023212013 - 2¹⁰ = 111312023210989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 111312023212013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312023212073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9181148 + ... + 17519061.

It is an arithmetic number, because the mean of its divisors is an integer number (3983244128640).

Almost surely, 2^{111312023212013} is an apocalyptic number.

111312023212013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111312023212013 is a deficient number, since it is larger than the sum of its proper divisors (16151788904467).

111312023212013 is a wasteful number, since it uses less digits than its factorization.

111312023212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26700509.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 111312023212013 its reverse (310212320213111), we get a palindrome (421524343425124).

The spelling of 111312023212013 in words is "one hundred eleven trillion, three hundred twelve billion, twenty-three million, two hundred twelve thousand, thirteen".