71213263 has 8 divisors (see below), whose sum is σ = 77869440. Its totient is φ = 64587480.

The previous prime is 71213257. The next prime is 71213279. The reversal of 71213263 is 36231217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71213263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71213243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545 + ... + 12202.

It is an arithmetic number, because the mean of its divisors is an integer number (9733680).

Almost surely, 2^71213263 is an apocalyptic number.

71213263 is a deficient number, since it is larger than the sum of its proper divisors (6656177).

71213263 is a wasteful number, since it uses less digits than its factorization.

71213263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15197.

The product of its digits is 1512, while the sum is 25.

The square root of 71213263 is about 8438.7951154178. The cubic root of 71213263 is about 414.4959535876.

The spelling of 71213263 in words is "seventy-one million, two hundred thirteen thousand, two hundred sixty-three".