103138613 has 4 divisors (see below), whose sum is σ = 103160940. Its totient is φ = 103116288.

The previous prime is 103138597. The next prime is 103138619. The reversal of 103138613 is 316831301.

It is a happy number.

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 38850289 + 64288324 = 6233^2 + 8018^2 .

It is a cyclic number.

It is not a de Polignac number, because 103138613 - 2⁴ = 103138597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103138619) 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, 1370 + ... + 14427.

It is an arithmetic number, because the mean of its divisors is an integer number (25790235).

Almost surely, 2^103138613 is an apocalyptic number.

It is an amenable number.

103138613 is a deficient number, since it is larger than the sum of its proper divisors (22327).

103138613 is an equidigital number, since it uses as much as digits as its factorization.

103138613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22326.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 103138613 is about 10155.7182414638. The cubic root of 103138613 is about 468.9649972437.

Adding to 103138613 its reverse (316831301), we get a palindrome (419969914).

The spelling of 103138613 in words is "one hundred three million, one hundred thirty-eight thousand, six hundred thirteen".