30512113 has 2 divisors, whose sum is σ = 30512114. Its totient is φ = 30512112.

The previous prime is 30512107. The next prime is 30512129. The reversal of 30512113 is 31121503.

It is an a-pointer prime, because the next prime (30512129) can be obtained adding 30512113 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29899024 + 613089 = 5468^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 30512113 - 2²¹ = 28414961 is a prime.

It is not a weakly prime, because it can be changed into another prime (30512143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15256056 + 15256057.

It is an arithmetic number, because the mean of its divisors is an integer number (15256057).

Almost surely, 2^30512113 is an apocalyptic number.

It is an amenable number.

30512113 is a deficient number, since it is larger than the sum of its proper divisors (1).

30512113 is an equidigital number, since it uses as much as digits as its factorization.

30512113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 30512113 is about 5523.7770592232. Note that the first 3 decimals coincide. The cubic root of 30512113 is about 312.4813445930.

Adding to 30512113 its reverse (31121503), we get a palindrome (61633616).

It can be divided in two parts, 30512 and 113, that added together give a square (30625 = 175²).

The spelling of 30512113 in words is "thirty million, five hundred twelve thousand, one hundred thirteen".