81031362 has 8 divisors (see below), whose sum is σ = 162062736. Its totient is φ = 27010452.

The previous prime is 81031351. The next prime is 81031381. The reversal of 81031362 is 26313018.

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

81031362 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6752608 + ... + 6752619.

It is an arithmetic number, because the mean of its divisors is an integer number (20257842).

Almost surely, 2^81031362 is an apocalyptic number.

81031362 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81031362 is a wasteful number, since it uses less digits than its factorization.

81031362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13505232.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 81031362 is about 9001.7421647146. The cubic root of 81031362 is about 432.7307056534.

The spelling of 81031362 in words is "eighty-one million, thirty-one thousand, three hundred sixty-two".