30770231 has 2 divisors, whose sum is σ = 30770232. Its totient is φ = 30770230.

The previous prime is 30770203. The next prime is 30770261. The reversal of 30770231 is 13207703.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30770231 - 2⁶ = 30770167 is a prime.

It is a super-2 number, since 2×30770231² = 1893614231586722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 30770197 and 30770206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30770261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15385115 + 15385116.

It is an arithmetic number, because the mean of its divisors is an integer number (15385116).

Almost surely, 2^30770231 is an apocalyptic number.

30770231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30770231 is an equidigital number, since it uses as much as digits as its factorization.

30770231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 30770231 is about 5547.0921211027. The cubic root of 30770231 is about 313.3600194816.

Adding to 30770231 its reverse (13207703), we get a palindrome (43977934).

The spelling of 30770231 in words is "thirty million, seven hundred seventy thousand, two hundred thirty-one".