102030111 has 18 divisors (see below), whose sum is σ = 153047232. Its totient is φ = 68015700.

The previous prime is 102030067. The next prime is 102030113. The reversal of 102030111 is 111030201.

It is not a de Polignac number, because 102030111 - 2¹³ = 102021919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102030093 and 102030102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102030113) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1215 + ... + 14336.

It is an arithmetic number, because the mean of its divisors is an integer number (8502624).

Almost surely, 2^102030111 is an apocalyptic number.

102030111 is a deficient number, since it is larger than the sum of its proper divisors (51017121).

102030111 is an frugal number, since it uses more digits than its factorization.

102030111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15575 (or 15554 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 102030111 is about 10100.9955449946. The cubic root of 102030111 is about 467.2788449429.

Adding to 102030111 its reverse (111030201), we get a palindrome (213060312).

The spelling of 102030111 in words is "one hundred two million, thirty thousand, one hundred eleven".