100013345 has 4 divisors (see below), whose sum is σ = 120016020. Its totient is φ = 80010672.

The previous prime is 100013341. The next prime is 100013351. The reversal of 100013345 is 543310001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543310001 = 13 ⋅41793077.

It can be written as a sum of positive squares in 2 ways, for example, as 62473216 + 37540129 = 7904^2 + 6127^2 .

It is a cyclic number.

It is not a de Polignac number, because 100013345 - 2² = 100013341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100013341) 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 3 ways as a sum of consecutive naturals, for example, 10001330 + ... + 10001339.

It is an arithmetic number, because the mean of its divisors is an integer number (30004005).

Almost surely, 2^100013345 is an apocalyptic number.

It is an amenable number.

100013345 is a deficient number, since it is larger than the sum of its proper divisors (20002675).

100013345 is an equidigital number, since it uses as much as digits as its factorization.

100013345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20002674.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 100013345 is about 10000.6672277404. The cubic root of 100013345 is about 464.1795297772.

Adding to 100013345 its reverse (543310001), we get a palindrome (643323346).

The spelling of 100013345 in words is "one hundred million, thirteen thousand, three hundred forty-five".