71272313 has 24 divisors (see below), whose sum is σ = 88416000. Its totient is φ = 57417024.

The previous prime is 71272301. The next prime is 71272321. The reversal of 71272313 is 31327217.

It is not a de Polignac number, because 71272313 - 2⁴ = 71272297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71272393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98768 + ... + 99486.

It is an arithmetic number, because the mean of its divisors is an integer number (3684000).

Almost surely, 2^71272313 is an apocalyptic number.

It is an amenable number.

71272313 is a deficient number, since it is larger than the sum of its proper divisors (17143687).

71272313 is an equidigital number, since it uses as much as digits as its factorization.

71272313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 743 counting only the distinct ones).

The product of its digits is 1764, while the sum is 26.

The square root of 71272313 is about 8442.2931126561. The cubic root of 71272313 is about 414.6104885445.

The spelling of 71272313 in words is "seventy-one million, two hundred seventy-two thousand, three hundred thirteen".