30163121 has 2 divisors, whose sum is σ = 30163122. Its totient is φ = 30163120.

The previous prime is 30163099. The next prime is 30163129. The reversal of 30163121 is 12136103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20830096 + 9333025 = 4564^2 + 3055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30163121 is a prime.

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 30163121.

It is not a weakly prime, because it can be changed into another prime (30163129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15081560 + 15081561.

It is an arithmetic number, because the mean of its divisors is an integer number (15081561).

Almost surely, 2^30163121 is an apocalyptic number.

It is an amenable number.

30163121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30163121 is an equidigital number, since it uses as much as digits as its factorization.

30163121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 30163121 is about 5492.0962300382. The cubic root of 30163121 is about 311.2854050250.

Adding to 30163121 its reverse (12136103), we get a palindrome (42299224).

The spelling of 30163121 in words is "thirty million, one hundred sixty-three thousand, one hundred twenty-one".