30668231 has 4 divisors (see below), whose sum is σ = 33456264. Its totient is φ = 27880200.

The previous prime is 30668213. The next prime is 30668273. The reversal of 30668231 is 13286603.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30668231 - 2¹⁰ = 30667207 is a prime.

It is a super-2 number, since 2×30668231² = 1881080785338722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30668194 and 30668203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30662231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394000 + ... + 1394021.

It is an arithmetic number, because the mean of its divisors is an integer number (8364066).

Almost surely, 2^30668231 is an apocalyptic number.

30668231 is a deficient number, since it is larger than the sum of its proper divisors (2788033).

30668231 is a wasteful number, since it uses less digits than its factorization.

30668231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788032.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 30668231 is about 5537.8904828463. The cubic root of 30668231 is about 313.0133846141.

The spelling of 30668231 in words is "thirty million, six hundred sixty-eight thousand, two hundred thirty-one".