71313930 has 24 divisors (see below), whose sum is σ = 185416452. Its totient is φ = 19017024.

The previous prime is 71313923. The next prime is 71313971. The reversal of 71313930 is 3931317.

It can be written as a sum of positive squares in 2 ways, for example, as 70913241 + 400689 = 8421^2 + 633^2 .

It is a super-2 number, since 2×71313930² = 10171353224089800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71313894 and 71313903.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 396099 + ... + 396278.

Almost surely, 2^71313930 is an apocalyptic number.

71313930 is an abundant number, since it is smaller than the sum of its proper divisors (114102522).

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

71313930 is a wasteful number, since it uses less digits than its factorization.

71313930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792390 (or 792387 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 27.

The square root of 71313930 is about 8444.7575453651. The cubic root of 71313930 is about 414.6911719899.

The spelling of 71313930 in words is "seventy-one million, three hundred thirteen thousand, nine hundred thirty".