30230232181 has 2 divisors, whose sum is σ = 30230232182. Its totient is φ = 30230232180.

The previous prime is 30230232143. The next prime is 30230232199. The reversal of 30230232181 is 18123203203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18056640625 + 12173591556 = 134375^2 + 110334^2 .

It is a cyclic number.

It is not a de Polignac number, because 30230232181 - 2²¹ = 30228135029 is a prime.

It is a super-2 number, since 2×30230232181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30230232281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15115116090 + 15115116091.

It is an arithmetic number, because the mean of its divisors is an integer number (15115116091).

Almost surely, 2^30230232181 is an apocalyptic number.

It is an amenable number.

30230232181 is a deficient number, since it is larger than the sum of its proper divisors (1).

30230232181 is an equidigital number, since it uses as much as digits as its factorization.

30230232181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 30230232181 its reverse (18123203203), we get a palindrome (48353435384).

The spelling of 30230232181 in words is "thirty billion, two hundred thirty million, two hundred thirty-two thousand, one hundred eighty-one".