71312038 has 32 divisors (see below), whose sum is σ = 125959680. Its totient is φ = 29643840.

The previous prime is 71311993. The next prime is 71312039. The reversal of 71312038 is 83021317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71312039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162223 + ... + 162661.

It is an arithmetic number, because the mean of its divisors is an integer number (3936240).

Almost surely, 2^71312038 is an apocalyptic number.

71312038 is a deficient number, since it is larger than the sum of its proper divisors (54647642).

71312038 is a wasteful number, since it uses less digits than its factorization.

71312038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 71312038 is about 8444.6455224598. The cubic root of 71312038 is about 414.6875046249.

The spelling of 71312038 in words is "seventy-one million, three hundred twelve thousand, thirty-eight".