71311652 has 12 divisors (see below), whose sum is σ = 124889436. Its totient is φ = 35628960.

The previous prime is 71311649. The next prime is 71311657. The reversal of 71311652 is 25611317.

It can be written as a sum of positive squares in 2 ways, for example, as 41783296 + 29528356 = 6464^2 + 5434^2 .

It is not an unprimeable number, because it can be changed into a prime (71311657) 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, 2 + ... + 11942.

It is an arithmetic number, because the mean of its divisors is an integer number (10407453).

Almost surely, 2^71311652 is an apocalyptic number.

It is an amenable number.

71311652 is a deficient number, since it is larger than the sum of its proper divisors (53577784).

71311652 is a wasteful number, since it uses less digits than its factorization.

71311652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13438 (or 13436 counting only the distinct ones).

The product of its digits is 1260, while the sum is 26.

The square root of 71311652 is about 8444.6226677099. The cubic root of 71311652 is about 414.6867564125.

Adding to 71311652 its reverse (25611317), we get a palindrome (96922969).

The spelling of 71311652 in words is "seventy-one million, three hundred eleven thousand, six hundred fifty-two".