81074103 has 32 divisors (see below), whose sum is σ = 123863040. Its totient is φ = 46691040.

The previous prime is 81074101. The next prime is 81074131. The reversal of 81074103 is 30147018.

It is not a de Polignac number, because 81074103 - 2¹ = 81074101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81074101) 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, 169018 + ... + 169496.

It is an arithmetic number, because the mean of its divisors is an integer number (3870720).

Almost surely, 2^81074103 is an apocalyptic number.

81074103 is a deficient number, since it is larger than the sum of its proper divisors (42788937).

81074103 is a wasteful number, since it uses less digits than its factorization.

81074103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739.

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

The square root of 81074103 is about 9004.1158921906. The cubic root of 81074103 is about 432.8067753451.

The spelling of 81074103 in words is "eighty-one million, seventy-four thousand, one hundred three".