81023106 has 32 divisors (see below), whose sum is σ = 172650240. Its totient is φ = 25275024.

The previous prime is 81023083. The next prime is 81023113. The reversal of 81023106 is 60132018.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5181 + ... + 13743.

It is an arithmetic number, because the mean of its divisors is an integer number (5395320).

Almost surely, 2^81023106 is an apocalyptic number.

81023106 is an abundant number, since it is smaller than the sum of its proper divisors (91627134).

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

81023106 is a wasteful number, since it uses less digits than its factorization.

81023106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8670.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 81023106 is about 9001.2835751353. The cubic root of 81023106 is about 432.7160086853.

The spelling of 81023106 in words is "eighty-one million, twenty-three thousand, one hundred six".