81106323 has 32 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 50265600.

The previous prime is 81106309. The next prime is 81106327. The reversal of 81106323 is 32360118.

It is not a de Polignac number, because 81106323 - 2⁹ = 81105811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81106293 and 81106302.

It is not an unprimeable number, because it can be changed into a prime (81106327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339238 + ... + 339476.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^81106323 is an apocalyptic number.

81106323 is a deficient number, since it is larger than the sum of its proper divisors (35015277).

81106323 is a wasteful number, since it uses less digits than its factorization.

81106323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403.

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

The square root of 81106323 is about 9005.9048962334. The cubic root of 81106323 is about 432.8641022715.

The spelling of 81106323 in words is "eighty-one million, one hundred six thousand, three hundred twenty-three".