111313232123 has 4 divisors (see below), whose sum is σ = 111314660400. Its totient is φ = 111311803848.

The previous prime is 111313232101. The next prime is 111313232137. The reversal of 111313232123 is 321232313111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321232313111 = 31 ⋅10362332681.

It is a cyclic number.

It is not a de Polignac number, because 111313232123 - 2²⁰ = 111312183547 is a prime.

It is a super-3 number, since 3×111313232123³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111313232143) 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, 590048 + ... + 755501.

It is an arithmetic number, because the mean of its divisors is an integer number (27828665100).

Almost surely, 2^111313232123 is an apocalyptic number.

111313232123 is a deficient number, since it is larger than the sum of its proper divisors (1428277).

111313232123 is an equidigital number, since it uses as much as digits as its factorization.

111313232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428276.

The product of its digits is 648, while the sum is 23.

Adding to 111313232123 its reverse (321232313111), we get a palindrome (432545545234).

The spelling of 111313232123 in words is "one hundred eleven billion, three hundred thirteen million, two hundred thirty-two thousand, one hundred twenty-three".