30223031 has 2 divisors, whose sum is σ = 30223032. Its totient is φ = 30223030.

The previous prime is 30223019. The next prime is 30223033. The reversal of 30223031 is 13032203.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30223031 is a prime.

It is a super-2 number, since 2×30223031² = 1826863205653922, which contains 22 as substring.

Together with 30223033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30222997 and 30223015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30223033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15111515 + 15111516.

It is an arithmetic number, because the mean of its divisors is an integer number (15111516).

Almost surely, 2^30223031 is an apocalyptic number.

30223031 is a deficient number, since it is larger than the sum of its proper divisors (1).

30223031 is an equidigital number, since it uses as much as digits as its factorization.

30223031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 30223031 is about 5497.5477260320. The cubic root of 30223031 is about 311.4913604506.

Adding to 30223031 its reverse (13032203), we get a palindrome (43255234).

The spelling of 30223031 in words is "thirty million, two hundred twenty-three thousand, thirty-one".