71343263 has 4 divisors (see below), whose sum is σ = 74445168. Its totient is φ = 68241360.

The previous prime is 71343257. The next prime is 71343287. The reversal of 71343263 is 36234317.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71343263 - 2²² = 67148959 is a prime.

It is a super-2 number, since 2×71343263² = 10179722350974338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71343253) 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, 1550918 + ... + 1550963.

It is an arithmetic number, because the mean of its divisors is an integer number (18611292).

Almost surely, 2^71343263 is an apocalyptic number.

71343263 is a deficient number, since it is larger than the sum of its proper divisors (3101905).

71343263 is a wasteful number, since it uses less digits than its factorization.

71343263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101904.

The product of its digits is 9072, while the sum is 29.

The square root of 71343263 is about 8446.4941247834. The cubic root of 71343263 is about 414.7480214196.

The spelling of 71343263 in words is "seventy-one million, three hundred forty-three thousand, two hundred sixty-three".