102311111 has 8 divisors (see below), whose sum is σ = 117006720. Its totient is φ = 87635448.

The previous prime is 102311093. The next prime is 102311119. The reversal of 102311111 is 111113201.

It is a happy number.

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 102311111 - 2¹⁸ = 102048967 is a prime.

It is a Duffinian number.

102311111 is a modest number, since divided by 11111 gives 1023 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 102311092 and 102311101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102311119) 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, 8420 + ... + 16598.

It is an arithmetic number, because the mean of its divisors is an integer number (14625840).

Almost surely, 2^102311111 is an apocalyptic number.

102311111 is a deficient number, since it is larger than the sum of its proper divisors (14695609).

102311111 is an equidigital number, since it uses as much as digits as its factorization.

102311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 102311111 is about 10114.8955011903. The cubic root of 102311111 is about 467.7074275644.

Adding to 102311111 its reverse (111113201), we get a palindrome (213424312).

The spelling of 102311111 in words is "one hundred two million, three hundred eleven thousand, one hundred eleven".