10030312181 has 2 divisors, whose sum is σ = 10030312182. Its totient is φ = 10030312180.

The previous prime is 10030312177. The next prime is 10030312207. The reversal of 10030312181 is 18121303001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9602236081 + 428076100 = 97991^2 + 20690^2 .

It is a cyclic number.

It is not a de Polignac number, because 10030312181 - 2² = 10030312177 is a prime.

It is a super-2 number, since 2×10030312181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10030312151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015156090 + 5015156091.

It is an arithmetic number, because the mean of its divisors is an integer number (5015156091).

Almost surely, 2^10030312181 is an apocalyptic number.

It is an amenable number.

10030312181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10030312181 is an equidigital number, since it uses as much as digits as its factorization.

10030312181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 10030312181 its reverse (18121303001), we get a palindrome (28151615182).

The spelling of 10030312181 in words is "ten billion, thirty million, three hundred twelve thousand, one hundred eighty-one".