31230163 has 2 divisors, whose sum is σ = 31230164. Its totient is φ = 31230162.

The previous prime is 31230079. The next prime is 31230179. The reversal of 31230163 is 36103213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31230163 - 2⁹ = 31229651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31230163.

It is not a weakly prime, because it can be changed into another prime (31239163) 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, 15615081 + 15615082.

It is an arithmetic number, because the mean of its divisors is an integer number (15615082).

Almost surely, 2^31230163 is an apocalyptic number.

31230163 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230163 is an equidigital number, since it uses as much as digits as its factorization.

31230163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 31230163 is about 5588.3953868709. The cubic root of 31230163 is about 314.9136002227.

Adding to 31230163 its reverse (36103213), we get a palindrome (67333376).

The spelling of 31230163 in words is "thirty-one million, two hundred thirty thousand, one hundred sixty-three".