19713071 has 8 divisors (see below), whose sum is σ = 22569984. Its totient is φ = 16866360.

The previous prime is 19713041. The next prime is 19713101. The reversal of 19713071 is 17031791.

It is an interprime number because it is at equal distance from previous prime (19713041) and next prime (19713101).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-19713071 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 (19713041) 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 7 ways as a sum of consecutive naturals, for example, 2186 + ... + 6648.

It is an arithmetic number, because the mean of its divisors is an integer number (2821248).

Almost surely, 2^19713071 is an apocalyptic number.

19713071 is a deficient number, since it is larger than the sum of its proper divisors (2856913).

19713071 is an equidigital number, since it uses as much as digits as its factorization.

19713071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101.

The product of its (nonzero) digits is 1323, while the sum is 29.

The square root of 19713071 is about 4439.9404275283. The cubic root of 19713071 is about 270.1374288943.

The spelling of 19713071 in words is "nineteen million, seven hundred thirteen thousand, seventy-one".