30890113 has 2 divisors, whose sum is σ = 30890114. Its totient is φ = 30890112.

The previous prime is 30890107. The next prime is 30890129. The reversal of 30890113 is 31109803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30338064 + 552049 = 5508^2 + 743^2 .

It is an emirp because it is prime and its reverse (31109803) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30890113 is a prime.

It is not a weakly prime, because it can be changed into another prime (30890213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15445056 + 15445057.

It is an arithmetic number, because the mean of its divisors is an integer number (15445057).

Almost surely, 2^30890113 is an apocalyptic number.

It is an amenable number.

30890113 is a deficient number, since it is larger than the sum of its proper divisors (1).

30890113 is an equidigital number, since it uses as much as digits as its factorization.

30890113 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 30890113 is about 5557.8874583784. The cubic root of 30890113 is about 313.7664463371.

Adding to 30890113 its reverse (31109803), we get a palindrome (61999916).

The spelling of 30890113 in words is "thirty million, eight hundred ninety thousand, one hundred thirteen".