103640013 has 8 divisors (see below), whose sum is σ = 153540800. Its totient is φ = 69093324.

The previous prime is 103639999. The next prime is 103640023. The reversal of 103640013 is 310046301.

103640013 is a `hidden beast` number, since 10 + 3 + 640 + 0 + 13 = 666.

It is not a de Polignac number, because 103640013 - 2¹⁶ = 103574477 is a prime.

It is a super-3 number, since 3×103640013³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103640023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919233 + ... + 1919286.

It is an arithmetic number, because the mean of its divisors is an integer number (19192600).

Almost surely, 2^103640013 is an apocalyptic number.

It is an amenable number.

103640013 is a deficient number, since it is larger than the sum of its proper divisors (49900787).

103640013 is an equidigital number, since it uses as much as digits as its factorization.

103640013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838528 (or 3838522 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 103640013 is about 10180.3739125830. The cubic root of 103640013 is about 469.7237141849.

Adding to 103640013 its reverse (310046301), we get a palindrome (413686314).

The spelling of 103640013 in words is "one hundred three million, six hundred forty thousand, thirteen".