981009103 has 2 divisors, whose sum is σ = 981009104. Its totient is φ = 981009102.

The previous prime is 981009101. The next prime is 981009131. The reversal of 981009103 is 301900189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981009103 - 2¹ = 981009101 is a prime.

Together with 981009101, 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 (981009101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490504551 + 490504552.

It is an arithmetic number, because the mean of its divisors is an integer number (490504552).

Almost surely, 2^981009103 is an apocalyptic number.

981009103 is a deficient number, since it is larger than the sum of its proper divisors (1).

981009103 is an equidigital number, since it uses as much as digits as its factorization.

981009103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 981009103 is about 31321.0648446058. The cubic root of 981009103 is about 993.6292000994.

The spelling of 981009103 in words is "nine hundred eighty-one million, nine thousand, one hundred three".