103191913 has 4 divisors (see below), whose sum is σ = 112573008. Its totient is φ = 93810820.

The previous prime is 103191899. The next prime is 103191917. The reversal of 103191913 is 319191301.

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 103191913 - 2²⁵ = 69637481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103191917) 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, 4690531 + ... + 4690552.

It is an arithmetic number, because the mean of its divisors is an integer number (28143252).

Almost surely, 2^103191913 is an apocalyptic number.

It is an amenable number.

103191913 is a deficient number, since it is larger than the sum of its proper divisors (9381095).

103191913 is an equidigital number, since it uses as much as digits as its factorization.

103191913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9381094.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 103191913 is about 10158.3420399197. The cubic root of 103191913 is about 469.0457672841.

The spelling of 103191913 in words is "one hundred three million, one hundred ninety-one thousand, nine hundred thirteen".