71300019 has 16 divisors (see below), whose sum is σ = 109133568. Its totient is φ = 40560672.

The previous prime is 71300017. The next prime is 71300039. The reversal of 71300019 is 91000317.

It is not a de Polignac number, because 71300019 - 2¹ = 71300017 is a prime.

It is a super-2 number, since 2×71300019² = 10167385418800722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 71299968 and 71300004.

It is not an unprimeable number, because it can be changed into a prime (71300011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2712 + ... + 12245.

It is an arithmetic number, because the mean of its divisors is an integer number (6820848).

Almost surely, 2^71300019 is an apocalyptic number.

71300019 is a deficient number, since it is larger than the sum of its proper divisors (37833549).

71300019 is a wasteful number, since it uses less digits than its factorization.

71300019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15194.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 71300019 is about 8443.9338581019. The cubic root of 71300019 is about 414.6642060380.

The spelling of 71300019 in words is "seventy-one million, three hundred thousand, nineteen".