111361623 has 4 divisors (see below), whose sum is σ = 148482168. Its totient is φ = 74241080.

The previous prime is 111361609. The next prime is 111361633. The reversal of 111361623 is 326163111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326163111 = 3 ⋅108721037.

It is a cyclic number.

It is not a de Polignac number, because 111361623 - 2²⁴ = 94584407 is a prime.

It is a super-2 number, since 2×111361623² = 24802822154388258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111361593 and 111361602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111361633) 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, 18560268 + ... + 18560273.

It is an arithmetic number, because the mean of its divisors is an integer number (37120542).

Almost surely, 2^111361623 is an apocalyptic number.

111361623 is a deficient number, since it is larger than the sum of its proper divisors (37120545).

111361623 is an equidigital number, since it uses as much as digits as its factorization.

111361623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37120544.

The product of its digits is 648, while the sum is 24.

The square root of 111361623 is about 10552.8016659084. The cubic root of 111361623 is about 481.1108862425.

The spelling of 111361623 in words is "one hundred eleven million, three hundred sixty-one thousand, six hundred twenty-three".