102643111 has 8 divisors (see below), whose sum is σ = 108223920. Its totient is φ = 97080192.

The previous prime is 102643103. The next prime is 102643133. The reversal of 102643111 is 111346201.

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 102643111 - 2³ = 102643103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102643141) 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, 8271 + ... + 16543.

It is an arithmetic number, because the mean of its divisors is an integer number (13527990).

Almost surely, 2^102643111 is an apocalyptic number.

102643111 is a deficient number, since it is larger than the sum of its proper divisors (5580809).

102643111 is an equidigital number, since it uses as much as digits as its factorization.

102643111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8945.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 102643111 is about 10131.2936488881. The cubic root of 102643111 is about 468.2127855402.

Adding to 102643111 its reverse (111346201), we get a palindrome (213989312).

The spelling of 102643111 in words is "one hundred two million, six hundred forty-three thousand, one hundred eleven".