103111025 has 12 divisors (see below), whose sum is σ = 127986972. Its totient is φ = 82405440.

The previous prime is 103111013. The next prime is 103111027. The reversal of 103111025 is 520111301.

It can be written as a sum of positive squares in 6 ways, for example, as 1343281 + 101767744 = 1159^2 + 10088^2 .

It is not a de Polignac number, because 103111025 - 2⁴ = 103111009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103111027) 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 11 ways as a sum of consecutive naturals, for example, 39047 + ... + 41603.

It is an arithmetic number, because the mean of its divisors is an integer number (10665581).

Almost surely, 2^103111025 is an apocalyptic number.

It is an amenable number.

103111025 is a deficient number, since it is larger than the sum of its proper divisors (24875947).

103111025 is a wasteful number, since it uses less digits than its factorization.

103111025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180 (or 4175 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 103111025 is about 10154.3599010474. The cubic root of 103111025 is about 468.9231798626.

Adding to 103111025 its reverse (520111301), we get a palindrome (623222326).

The spelling of 103111025 in words is "one hundred three million, one hundred eleven thousand, twenty-five".