111143541 has 8 divisors (see below), whose sum is σ = 148257760. Its totient is φ = 74062512.

The previous prime is 111143533. The next prime is 111143561. The reversal of 111143541 is 145341111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111143541 - 2³ = 111143533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111143561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011 + ... + 14943.

It is an arithmetic number, because the mean of its divisors is an integer number (18532220).

Almost surely, 2^111143541 is an apocalyptic number.

It is an amenable number.

111143541 is a deficient number, since it is larger than the sum of its proper divisors (37114219).

111143541 is a wasteful number, since it uses less digits than its factorization.

111143541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16595.

The product of its digits is 240, while the sum is 21.

The square root of 111143541 is about 10542.4637063639. The cubic root of 111143541 is about 480.7966242128.

Adding to 111143541 its reverse (145341111), we get a palindrome (256484652).

The spelling of 111143541 in words is "one hundred eleven million, one hundred forty-three thousand, five hundred forty-one".