71312901 has 8 divisors (see below), whose sum is σ = 103727904. Its totient is φ = 43219920.

The previous prime is 71312867. The next prime is 71312911. The reversal of 71312901 is 10921317.

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

It is not a de Polignac number, because 71312901 - 2⁹ = 71312389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71312911) 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, 1080466 + ... + 1080531.

It is an arithmetic number, because the mean of its divisors is an integer number (12965988).

Almost surely, 2^71312901 is an apocalyptic number.

It is an amenable number.

71312901 is a deficient number, since it is larger than the sum of its proper divisors (32415003).

71312901 is a wasteful number, since it uses less digits than its factorization.

71312901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161011.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 71312901 is about 8444.6966197727. The cubic root of 71312901 is about 414.6891774321.

The spelling of 71312901 in words is "seventy-one million, three hundred twelve thousand, nine hundred one".