891120103 has 2 divisors, whose sum is σ = 891120104. Its totient is φ = 891120102.

The previous prime is 891120101. The next prime is 891120137. The reversal of 891120103 is 301021198.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 891120103 - 2¹ = 891120101 is a prime.

Together with 891120101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (891120101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445560051 + 445560052.

It is an arithmetic number, because the mean of its divisors is an integer number (445560052).

Almost surely, 2^891120103 is an apocalyptic number.

891120103 is a deficient number, since it is larger than the sum of its proper divisors (1).

891120103 is an equidigital number, since it uses as much as digits as its factorization.

891120103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 891120103 is about 29851.6348463531. The cubic root of 891120103 is about 962.3035332510.

The spelling of 891120103 in words is "eight hundred ninety-one million, one hundred twenty thousand, one hundred three".