103640111 has 2 divisors, whose sum is σ = 103640112. Its totient is φ = 103640110.

The previous prime is 103640101. The next prime is 103640129. The reversal of 103640111 is 111046301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103640111 - 2¹⁰ = 103639087 is a prime.

It is a super-3 number, since 3×103640111³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103640111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103640101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51820055 + 51820056.

It is an arithmetic number, because the mean of its divisors is an integer number (51820056).

Almost surely, 2^103640111 is an apocalyptic number.

103640111 is a deficient number, since it is larger than the sum of its proper divisors (1).

103640111 is an equidigital number, since it uses as much as digits as its factorization.

103640111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 103640111 is about 10180.3787257646. The cubic root of 103640111 is about 469.7238622388.

Adding to 103640111 its reverse (111046301), we get a palindrome (214686412).

It can be divided in two parts, 1036401 and 11, that multiplied together give a palindrome (11400411).

The spelling of 103640111 in words is "one hundred three million, six hundred forty thousand, one hundred eleven".