30233681 has 2 divisors, whose sum is σ = 30233682. Its totient is φ = 30233680.

The previous prime is 30233669. The next prime is 30233713. The reversal of 30233681 is 18633203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26173456 + 4060225 = 5116^2 + 2015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30233681 is a prime.

It is a super-2 number, since 2×30233681² = 1828150933619522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30233681.

It is not a weakly prime, because it can be changed into another prime (30233611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15116840 + 15116841.

It is an arithmetic number, because the mean of its divisors is an integer number (15116841).

Almost surely, 2^30233681 is an apocalyptic number.

It is an amenable number.

30233681 is a deficient number, since it is larger than the sum of its proper divisors (1).

30233681 is an equidigital number, since it uses as much as digits as its factorization.

30233681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 30233681 is about 5498.5162544090. The cubic root of 30233681 is about 311.5279439577.

Adding to 30233681 its reverse (18633203), we get a palindrome (48866884).

The spelling of 30233681 in words is "thirty million, two hundred thirty-three thousand, six hundred eighty-one".