111013543 has 4 divisors (see below), whose sum is σ = 111571600. Its totient is φ = 110455488.

The previous prime is 111013531. The next prime is 111013547. The reversal of 111013543 is 345310111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345310111 = 409 ⋅844279.

It is a cyclic number.

It is not a de Polignac number, because 111013543 - 2¹³ = 111005351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111013543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111013547) 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, 278730 + ... + 279127.

It is an arithmetic number, because the mean of its divisors is an integer number (27892900).

Almost surely, 2^111013543 is an apocalyptic number.

111013543 is a deficient number, since it is larger than the sum of its proper divisors (558057).

111013543 is an equidigital number, since it uses as much as digits as its factorization.

111013543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558056.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 111013543 is about 10536.2964555863. The cubic root of 111013543 is about 480.6090979941.

Adding to 111013543 its reverse (345310111), we get a palindrome (456323654).

It can be divided in two parts, 111013 and 543, that added together give a square (111556 = 334²).

The spelling of 111013543 in words is "one hundred eleven million, thirteen thousand, five hundred forty-three".