30981103 has 2 divisors, whose sum is σ = 30981104. Its totient is φ = 30981102.

The previous prime is 30981073. The next prime is 30981109. The reversal of 30981103 is 30118903.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30981103 - 2⁹ = 30980591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30981109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15490551 + 15490552.

It is an arithmetic number, because the mean of its divisors is an integer number (15490552).

Almost surely, 2^30981103 is an apocalyptic number.

30981103 is a deficient number, since it is larger than the sum of its proper divisors (1).

30981103 is an equidigital number, since it uses as much as digits as its factorization.

30981103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 30981103 is about 5566.0671034403. The cubic root of 30981103 is about 314.0742214366.

The spelling of 30981103 in words is "thirty million, nine hundred eighty-one thousand, one hundred three".