103111211 has 8 divisors (see below), whose sum is σ = 121905120. Its totient is φ = 85333248.

The previous prime is 103111207. The next prime is 103111213. The reversal of 103111211 is 112111301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103111211 - 2² = 103111207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103111192 and 103111201.

It is not an unprimeable number, because it can be changed into a prime (103111213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253766 + ... + 254171.

It is an arithmetic number, because the mean of its divisors is an integer number (15238140).

Almost surely, 2^103111211 is an apocalyptic number.

103111211 is a deficient number, since it is larger than the sum of its proper divisors (18793909).

103111211 is an equidigital number, since it uses as much as digits as its factorization.

103111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507973.

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

The square root of 103111211 is about 10154.3690596708. The cubic root of 103111211 is about 468.9234618229.

Adding to 103111211 its reverse (112111301), we get a palindrome (215222512).

The spelling of 103111211 in words is "one hundred three million, one hundred eleven thousand, two hundred eleven".