71381001 has 8 divisors (see below), whose sum is σ = 95226624. Its totient is φ = 47561360.

The previous prime is 71380999. The next prime is 71381017. The reversal of 71381001 is 10018317.

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

It is a cyclic number.

It is not a de Polignac number, because 71381001 - 2¹ = 71380999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71381021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231 + ... + 12011.

It is an arithmetic number, because the mean of its divisors is an integer number (11903328).

Almost surely, 2^71381001 is an apocalyptic number.

It is an amenable number.

71381001 is a deficient number, since it is larger than the sum of its proper divisors (23845623).

71381001 is a wasteful number, since it uses less digits than its factorization.

71381001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12991.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 71381001 is about 8448.7277740498. The cubic root of 71381001 is about 414.8211374189.

Adding to 71381001 its reverse (10018317), we get a palindrome (81399318).

The spelling of 71381001 in words is "seventy-one million, three hundred eighty-one thousand, one".