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103111 = 971063

103111 has 4 divisors (see below), whose sum is σ = 104272. Its totient is φ = 101952.

The previous prime is 103099. The next prime is 103123. The reversal of 103111 is 111301.

Adding to 103111 its reverse (111301), we get a palindrome (214412).

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (103099) and next prime (103123).

It is a cyclic number.

It is not a de Polignac number, because 103111 - 25 = 103079 is a prime.

It is a Duffinian number.

103111 is a modest number, since divided by 111 gives 103 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 103094 and 103103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435 + ... + 628.

It is an arithmetic number, because the mean of its divisors is an integer number (26068).

2103111 is an apocalyptic number.

103111 is a deficient number, since it is larger than the sum of its proper divisors (1161).

103111 is an equidigital number, since it uses as much as digits as its factorization.

103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 3, while the sum is 7.

The square root of 103111 is about 321.1090157563. The cubic root of 103111 is about 46.8923141965.

The spelling of 103111 in words is "one hundred three thousand, one hundred eleven", and thus it is an iban number.

Divisors: 1 97 1063 103111