103236145 has 4 divisors (see below), whose sum is σ = 123883380. Its totient is φ = 82588912.

The previous prime is 103236131. The next prime is 103236149. The reversal of 103236145 is 541632301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40144896 + 63091249 = 6336^2 + 7943^2 .

It is a cyclic number.

It is not a de Polignac number, because 103236145 - 2⁵ = 103236113 is a prime.

It is a super-2 number, since 2×103236145² = 21315403268922050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (103236149) 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 3 ways as a sum of consecutive naturals, for example, 10323610 + ... + 10323619.

It is an arithmetic number, because the mean of its divisors is an integer number (30970845).

Almost surely, 2^103236145 is an apocalyptic number.

It is an amenable number.

103236145 is a deficient number, since it is larger than the sum of its proper divisors (20647235).

103236145 is an equidigital number, since it uses as much as digits as its factorization.

103236145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20647234.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 103236145 is about 10160.5189335978. The cubic root of 103236145 is about 469.1127746951.

Adding to 103236145 its reverse (541632301), we get a palindrome (644868446).

The spelling of 103236145 in words is "one hundred three million, two hundred thirty-six thousand, one hundred forty-five".