71231382 has 12 divisors (see below), whose sum is σ = 154334700. Its totient is φ = 23743788.

The previous prime is 71231359. The next prime is 71231423. The reversal of 71231382 is 28313217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1978632 + ... + 1978667.

It is an arithmetic number, because the mean of its divisors is an integer number (12861225).

Almost surely, 2^71231382 is an apocalyptic number.

71231382 is an abundant number, since it is smaller than the sum of its proper divisors (83103318).

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

71231382 is a wasteful number, since it uses less digits than its factorization.

71231382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957307 (or 3957304 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 71231382 is about 8439.8686008729. The cubic root of 71231382 is about 414.5311044149.

Adding to 71231382 its reverse (28313217), we get a palindrome (99544599).

The spelling of 71231382 in words is "seventy-one million, two hundred thirty-one thousand, three hundred eighty-two".