32991103 has 2 divisors, whose sum is σ = 32991104. Its totient is φ = 32991102.

The previous prime is 32991083. The next prime is 32991137. The reversal of 32991103 is 30119923.

It is a weak prime.

It is an emirp because it is prime and its reverse (30119923) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32991103 - 2⁵ = 32991071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32991193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16495551 + 16495552.

It is an arithmetic number, because the mean of its divisors is an integer number (16495552).

Almost surely, 2^32991103 is an apocalyptic number.

32991103 is a deficient number, since it is larger than the sum of its proper divisors (1).

32991103 is an equidigital number, since it uses as much as digits as its factorization.

32991103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 32991103 is about 5743.7882098838. The cubic root of 32991103 is about 320.7246047188.

The spelling of 32991103 in words is "thirty-two million, nine hundred ninety-one thousand, one hundred three".