100345005 has 12 divisors (see below), whose sum is σ = 173931420. Its totient is φ = 53517312.

The previous prime is 100345001. The next prime is 100345009. The reversal of 100345005 is 500543001.

It is an interprime number because it is at equal distance from previous prime (100345001) and next prime (100345009).

It can be written as a sum of positive squares in 2 ways, for example, as 53846244 + 46498761 = 7338^2 + 6819^2 .

It is not a de Polignac number, because 100345005 - 2² = 100345001 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100345001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1114900 + ... + 1114989.

It is an arithmetic number, because the mean of its divisors is an integer number (14494285).

Almost surely, 2^100345005 is an apocalyptic number.

100345005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100345005 is a deficient number, since it is larger than the sum of its proper divisors (73586415).

100345005 is a wasteful number, since it uses less digits than its factorization.

100345005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229900 (or 2229897 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 100345005 is about 10017.2353970544. The cubic root of 100345005 is about 464.6920611191.

Adding to 100345005 its reverse (500543001), we get a palindrome (600888006).

The spelling of 100345005 in words is "one hundred million, three hundred forty-five thousand, five".