103121313 has 4 divisors (see below), whose sum is σ = 137495088. Its totient is φ = 68747540.

The previous prime is 103121299. The next prime is 103121329. The reversal of 103121313 is 313121301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103121313 - 2⁴ = 103121297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103121292 and 103121301.

It is not an unprimeable number, because it can be changed into a prime (103121393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17186883 + ... + 17186888.

It is an arithmetic number, because the mean of its divisors is an integer number (34373772).

Almost surely, 2^103121313 is an apocalyptic number.

It is an amenable number.

103121313 is a deficient number, since it is larger than the sum of its proper divisors (34373775).

103121313 is an equidigital number, since it uses as much as digits as its factorization.

103121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34373774.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 103121313 is about 10154.8664688414. The cubic root of 103121313 is about 468.9387750951.

Adding to 103121313 its reverse (313121301), we get a palindrome (416242614).

The spelling of 103121313 in words is "one hundred three million, one hundred twenty-one thousand, three hundred thirteen".