111623013 has 12 divisors (see below), whose sum is σ = 161372640. Its totient is φ = 74351016.

The previous prime is 111623011. The next prime is 111623021. The reversal of 111623013 is 310326111.

It is not a de Polignac number, because 111623013 - 2¹ = 111623011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111623011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7170 + ... + 16572.

It is an arithmetic number, because the mean of its divisors is an integer number (13447720).

Almost surely, 2^111623013 is an apocalyptic number.

It is an amenable number.

111623013 is a deficient number, since it is larger than the sum of its proper divisors (49749627).

111623013 is a wasteful number, since it uses less digits than its factorization.

111623013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728 (or 10725 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 111623013 is about 10565.1792696575. The cubic root of 111623013 is about 481.4870161449.

Adding to 111623013 its reverse (310326111), we get a palindrome (421949124).

The spelling of 111623013 in words is "one hundred eleven million, six hundred twenty-three thousand, thirteen".