71310340 has 48 divisors (see below), whose sum is σ = 154300608. Its totient is φ = 27667584.

The previous prime is 71310329. The next prime is 71310361. The reversal of 71310340 is 4301317.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243234 + ... + 243526.

It is an arithmetic number, because the mean of its divisors is an integer number (3214596).

Almost surely, 2^71310340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71310340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77150304).

71310340 is an abundant number, since it is smaller than the sum of its proper divisors (82990268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71310340 is a wasteful number, since it uses less digits than its factorization.

71310340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 71310340 is about 8444.5449847816. The cubic root of 71310340 is about 414.6842132453.

Adding to 71310340 its reverse (4301317), we get a palindrome (75611657).

The spelling of 71310340 in words is "seventy-one million, three hundred ten thousand, three hundred forty".