111534423 has 48 divisors (see below), whose sum is σ = 200837376. Its totient is φ = 53464320.

The previous prime is 111534421. The next prime is 111534439. The reversal of 111534423 is 324435111.

It is a happy number.

It is not a de Polignac number, because 111534423 - 2¹ = 111534421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111534393 and 111534402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111534421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37611 + ... + 40467.

It is an arithmetic number, because the mean of its divisors is an integer number (4184112).

Almost surely, 2^111534423 is an apocalyptic number.

111534423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111534423 is a deficient number, since it is larger than the sum of its proper divisors (89302953).

111534423 is a wasteful number, since it uses less digits than its factorization.

111534423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904 (or 2891 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 111534423 is about 10560.9858914781. The cubic root of 111534423 is about 481.3596044730.

Adding to 111534423 its reverse (324435111), we get a palindrome (435969534).

It can be divided in two parts, 11153 and 4423, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 111534423 in words is "one hundred eleven million, five hundred thirty-four thousand, four hundred twenty-three".