103072313 has 4 divisors (see below), whose sum is σ = 103137828. Its totient is φ = 103006800.

The previous prime is 103072289. The next prime is 103072337. The reversal of 103072313 is 313270301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313270301 = 457 ⋅685493.

It is an interprime number because it is at equal distance from previous prime (103072289) and next prime (103072337).

It can be written as a sum of positive squares in 2 ways, for example, as 83685904 + 19386409 = 9148^2 + 4403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103072313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103071313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30338 + ... + 33563.

It is an arithmetic number, because the mean of its divisors is an integer number (25784457).

Almost surely, 2^103072313 is an apocalyptic number.

It is an amenable number.

103072313 is a deficient number, since it is larger than the sum of its proper divisors (65515).

103072313 is an equidigital number, since it uses as much as digits as its factorization.

103072313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65514.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 103072313 is about 10152.4535458184. The cubic root of 103072313 is about 468.8644883490.

The spelling of 103072313 in words is "one hundred three million, seventy-two thousand, three hundred thirteen".