81073203 has 8 divisors (see below), whose sum is σ = 108345600. Its totient is φ = 53924808.

The previous prime is 81073193. The next prime is 81073243. The reversal of 81073203 is 30237018.

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

It is not a de Polignac number, because 81073203 - 2¹⁰ = 81072179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81073243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29463 + ... + 32096.

It is an arithmetic number, because the mean of its divisors is an integer number (13543200).

Almost surely, 2^81073203 is an apocalyptic number.

81073203 is a deficient number, since it is larger than the sum of its proper divisors (27272397).

81073203 is a wasteful number, since it uses less digits than its factorization.

81073203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62001.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 81073203 is about 9004.0659149076. The cubic root of 81073203 is about 432.8051738163.

The spelling of 81073203 in words is "eighty-one million, seventy-three thousand, two hundred three".