71151312 has 20 divisors (see below), whose sum is σ = 183807680. Its totient is φ = 23717088.

The previous prime is 71151299. The next prime is 71151323. The reversal of 71151312 is 21315117.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741112 + ... + 741207.

It is an arithmetic number, because the mean of its divisors is an integer number (9190384).

Almost surely, 2^71151312 is an apocalyptic number.

It is an amenable number.

71151312 is an abundant number, since it is smaller than the sum of its proper divisors (112656368).

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

71151312 is a wasteful number, since it uses less digits than its factorization.

71151312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482330 (or 1482324 counting only the distinct ones).

The product of its digits is 210, while the sum is 21.

The square root of 71151312 is about 8435.1237098219. The cubic root of 71151312 is about 414.3757236963.

Adding to 71151312 its reverse (21315117), we get a palindrome (92466429).

The spelling of 71151312 in words is "seventy-one million, one hundred fifty-one thousand, three hundred twelve".