81070314 has 48 divisors (see below), whose sum is σ = 185939712. Its totient is φ = 23472384.

The previous prime is 81070309. The next prime is 81070343. The reversal of 81070314 is 41307018.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14887 + ... + 19589.

It is an arithmetic number, because the mean of its divisors is an integer number (3873744).

Almost surely, 2^81070314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81070314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92969856).

81070314 is an abundant number, since it is smaller than the sum of its proper divisors (104869398).

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

81070314 is a wasteful number, since it uses less digits than its factorization.

81070314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751 (or 4738 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 81070314 is about 9003.9054859544. The cubic root of 81070314 is about 432.8000328287.

The spelling of 81070314 in words is "eighty-one million, seventy thousand, three hundred fourteen".