71373331 has 4 divisors (see below), whose sum is σ = 71557200. Its totient is φ = 71189464.

The previous prime is 71373319. The next prime is 71373343. The reversal of 71373331 is 13337317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13337317 = 7 ⋅1905331.

It is an interprime number because it is at equal distance from previous prime (71373319) and next prime (71373343).

It is a cyclic number.

It is not a de Polignac number, because 71373331 - 2²⁵ = 37818899 is a prime.

It is a super-2 number, since 2×71373331² = 10188304756071122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71373331.

It is not an unprimeable number, because it can be changed into a prime (71373311) 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, 91351 + ... + 92128.

It is an arithmetic number, because the mean of its divisors is an integer number (17889300).

Almost surely, 2^71373331 is an apocalyptic number.

71373331 is a deficient number, since it is larger than the sum of its proper divisors (183869).

71373331 is a wasteful number, since it uses less digits than its factorization.

71373331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183868.

The product of its digits is 3969, while the sum is 28.

The square root of 71373331 is about 8448.2738473608. The cubic root of 71373331 is about 414.8062791604.

The spelling of 71373331 in words is "seventy-one million, three hundred seventy-three thousand, three hundred thirty-one".