12051730231 has 2 divisors, whose sum is σ = 12051730232. Its totient is φ = 12051730230.

The previous prime is 12051730193. The next prime is 12051730237. The reversal of 12051730231 is 13203715021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12051730231 - 2⁹ = 12051729719 is a prime.

It is a super-2 number, since 2×12051730231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12051730196 and 12051730205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12051730237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6025865115 + 6025865116.

It is an arithmetic number, because the mean of its divisors is an integer number (6025865116).

Almost surely, 2^12051730231 is an apocalyptic number.

12051730231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12051730231 is an equidigital number, since it uses as much as digits as its factorization.

12051730231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The spelling of 12051730231 in words is "twelve billion, fifty-one million, seven hundred thirty thousand, two hundred thirty-one".