80961103 has 4 divisors (see below), whose sum is σ = 81598720. Its totient is φ = 80323488.

The previous prime is 80961079. The next prime is 80961107. The reversal of 80961103 is 30116908.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80961103 - 2⁹ = 80960591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80961107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318618 + ... + 318871.

It is an arithmetic number, because the mean of its divisors is an integer number (20399680).

Almost surely, 2^80961103 is an apocalyptic number.

80961103 is a deficient number, since it is larger than the sum of its proper divisors (637617).

80961103 is a wasteful number, since it uses less digits than its factorization.

80961103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637616.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 80961103 is about 8997.8387960665. The cubic root of 80961103 is about 432.6056017543.

The spelling of 80961103 in words is "eighty million, nine hundred sixty-one thousand, one hundred three".