71231061 has 32 divisors (see below), whose sum is σ = 106444800. Its totient is φ = 42007680.

The previous prime is 71231059. The next prime is 71231093. The reversal of 71231061 is 16013217.

It is not a de Polignac number, because 71231061 - 2¹ = 71231059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71231261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231870 + ... + 232176.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^71231061 is an apocalyptic number.

It is an amenable number.

71231061 is a deficient number, since it is larger than the sum of its proper divisors (35213739).

71231061 is a wasteful number, since it uses less digits than its factorization.

71231061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 71231061 is about 8439.8495839677. The cubic root of 71231061 is about 414.5304817274.

Adding to 71231061 its reverse (16013217), we get a palindrome (87244278).

It can be divided in two parts, 71 and 231061, that added together give a palindrome (231132).

The spelling of 71231061 in words is "seventy-one million, two hundred thirty-one thousand, sixty-one".