81314962 has 16 divisors (see below), whose sum is σ = 123298200. Its totient is φ = 40218112.

The previous prime is 81314957. The next prime is 81314963. The reversal of 81314962 is 26941318.

It can be written as a sum of positive squares in 4 ways, for example, as 29604481 + 51710481 = 5441^2 + 7191^2 .

It is a super-2 number, since 2×81314962² = 13224246090122888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81314963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104808 + ... + 105580.

Almost surely, 2^81314962 is an apocalyptic number.

81314962 is a deficient number, since it is larger than the sum of its proper divisors (41983238).

81314962 is a wasteful number, since it uses less digits than its factorization.

81314962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277.

The product of its digits is 10368, while the sum is 34.

The square root of 81314962 is about 9017.4809120951. The cubic root of 81314962 is about 433.2349529456.

The spelling of 81314962 in words is "eighty-one million, three hundred fourteen thousand, nine hundred sixty-two".