71081356 has 24 divisors (see below), whose sum is σ = 132608000. Its totient is φ = 33241104.

The previous prime is 71081347. The next prime is 71081377. The reversal of 71081356 is 65318017.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85 + ... + 11923.

Almost surely, 2^71081356 is an apocalyptic number.

71081356 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

71081356 is a deficient number, since it is larger than the sum of its proper divisors (61526644).

71081356 is a wasteful number, since it uses less digits than its factorization.

71081356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11941 (or 11939 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 71081356 is about 8430.9759814626. The cubic root of 71081356 is about 414.2398743687.

It can be divided in two parts, 7108 and 1356, that added together give a square (8464 = 92²).

The spelling of 71081356 in words is "seventy-one million, eighty-one thousand, three hundred fifty-six".