71431356 has 12 divisors (see below), whose sum is σ = 166673192. Its totient is φ = 23810448.

The previous prime is 71431343. The next prime is 71431357. The reversal of 71431356 is 65313417.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71431357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2976295 + ... + 2976318.

Almost surely, 2^71431356 is an apocalyptic number.

It is an amenable number.

71431356 is an abundant number, since it is smaller than the sum of its proper divisors (95241836).

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

71431356 is a wasteful number, since it uses less digits than its factorization.

71431356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952620 (or 5952618 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 71431356 is about 8451.7072831470. The cubic root of 71431356 is about 414.9186582727.

The spelling of 71431356 in words is "seventy-one million, four hundred thirty-one thousand, three hundred fifty-six".