19313113 has 2 divisors, whose sum is σ = 19313114. Its totient is φ = 19313112.

The previous prime is 19313111. The next prime is 19313117. The reversal of 19313113 is 31131391.

19313113 = 3107² + 3108².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9659664 + 9653449 = 3108^2 + 3107^2 .

It is a cyclic number.

It is not a de Polignac number, because 19313113 - 2¹ = 19313111 is a prime.

Together with 19313111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (19313111) 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 as a sum of consecutive naturals, namely, 9656556 + 9656557.

It is an arithmetic number, because the mean of its divisors is an integer number (9656557).

Almost surely, 2^19313113 is an apocalyptic number.

19313113 is the 3108-th centered square number.

It is an amenable number.

19313113 is a deficient number, since it is larger than the sum of its proper divisors (1).

19313113 is an equidigital number, since it uses as much as digits as its factorization.

19313113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243, while the sum is 22.

The square root of 19313113 is about 4394.6687019615. The cubic root of 19313113 is about 268.2979949948.

The spelling of 19313113 in words is "nineteen million, three hundred thirteen thousand, one hundred thirteen".