111640543 has 8 divisors (see below), whose sum is σ = 128087712. Its totient is φ = 95318016.

The previous prime is 111640541. The next prime is 111640577. The reversal of 111640543 is 345046111.

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

It is a cyclic number.

It is not a de Polignac number, because 111640543 - 2¹ = 111640541 is a prime.

It is a super-2 number, since 2×111640543² = 24927221682669698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111640541) 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, 29230 + ... + 32827.

It is an arithmetic number, because the mean of its divisors is an integer number (16010964).

Almost surely, 2^111640543 is an apocalyptic number.

111640543 is a deficient number, since it is larger than the sum of its proper divisors (16447169).

111640543 is an equidigital number, since it uses as much as digits as its factorization.

111640543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62321.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 111640543 is about 10566.0088491350. The cubic root of 111640543 is about 481.5122201041.

Adding to 111640543 its reverse (345046111), we get a palindrome (456686654).

The spelling of 111640543 in words is "one hundred eleven million, six hundred forty thousand, five hundred forty-three".