111312100023 has 4 divisors (see below), whose sum is σ = 148416133368. Its totient is φ = 74208066680.

The previous prime is 111312099971. The next prime is 111312100049. The reversal of 111312100023 is 320001213111.

It is a happy number.

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 111312100023 - 2⁶ = 111312099959 is a prime.

It is a super-2 number, since 2×111312100023² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111312099975 and 111312100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312170023) 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, 18552016668 + ... + 18552016673.

It is an arithmetic number, because the mean of its divisors is an integer number (37104033342).

Almost surely, 2^111312100023 is an apocalyptic number.

111312100023 is a deficient number, since it is larger than the sum of its proper divisors (37104033345).

111312100023 is an equidigital number, since it uses as much as digits as its factorization.

111312100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37104033344.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 111312100023 its reverse (320001213111), we get a palindrome (431313313134).

The spelling of 111312100023 in words is "one hundred eleven billion, three hundred twelve million, one hundred thousand, twenty-three".