1230111 has 12 divisors (see below), whose sum is σ = 1834560. Its totient is φ = 793440.

The previous prime is 1230107. The next prime is 1230127. The reversal of 1230111 is 1110321.

1230111 = 184² + 185² + ... + 214².

It is not a de Polignac number, because 1230111 - 2² = 1230107 is a prime.

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

1230111 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1230093 and 1230102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1926 + ... + 2483.

It is an arithmetic number, because the mean of its divisors is an integer number (152880).

2^1230111 is an apocalyptic number.

1230111 is a deficient number, since it is larger than the sum of its proper divisors (604449).

1230111 is a wasteful number, since it uses less digits than its factorization.

1230111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446 (or 4443 counting only the distinct ones).

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

The square root of 1230111 is about 1109.1036921767. The cubic root of 1230111 is about 107.1473499068.

Adding to 1230111 its reverse (1110321), we get a palindrome (2340432).

The spelling of 1230111 in words is "one million, two hundred thirty thousand, one hundred eleven".