71381299 has 4 divisors (see below), whose sum is σ = 77870520. Its totient is φ = 64892080.

The previous prime is 71381279. The next prime is 71381329. The reversal of 71381299 is 99218317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99218317 = 11 ⋅9019847.

It is not a de Polignac number, because 71381299 - 2¹¹ = 71379251 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71381269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3244594 + ... + 3244615.

It is an arithmetic number, because the mean of its divisors is an integer number (19467630).

Almost surely, 2^71381299 is an apocalyptic number.

71381299 is a deficient number, since it is larger than the sum of its proper divisors (6489221).

71381299 is a wasteful number, since it uses less digits than its factorization.

71381299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489220.

The product of its digits is 27216, while the sum is 40.

The square root of 71381299 is about 8448.7454098227. The cubic root of 71381299 is about 414.8217146805.

The spelling of 71381299 in words is "seventy-one million, three hundred eighty-one thousand, two hundred ninety-nine".