81326314 has 8 divisors (see below), whose sum is σ = 122766948. Its totient is φ = 40404000.

The previous prime is 81326293. The next prime is 81326339. The reversal of 81326314 is 41362318.

It can be written as a sum of positive squares in 2 ways, for example, as 80694289 + 632025 = 8983^2 + 795^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×81326314² = 13227938697653192, which contains 22 as substring.

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, 129187 + ... + 129814.

Almost surely, 2^81326314 is an apocalyptic number.

81326314 is a deficient number, since it is larger than the sum of its proper divisors (41440634).

81326314 is a wasteful number, since it uses less digits than its factorization.

81326314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259160.

The product of its digits is 3456, while the sum is 28.

The square root of 81326314 is about 9018.1103342108. The cubic root of 81326314 is about 433.2551126400.

The spelling of 81326314 in words is "eighty-one million, three hundred twenty-six thousand, three hundred fourteen".