30120743231 has 2 divisors, whose sum is σ = 30120743232. Its totient is φ = 30120743230.

The previous prime is 30120743227. The next prime is 30120743287. The reversal of 30120743231 is 13234702103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30120743231 - 2² = 30120743227 is a prime.

It is a super-2 number, since 2×30120743231² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30120743231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30120743201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060371615 + 15060371616.

It is an arithmetic number, because the mean of its divisors is an integer number (15060371616).

Almost surely, 2^30120743231 is an apocalyptic number.

30120743231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30120743231 is an equidigital number, since it uses as much as digits as its factorization.

30120743231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The spelling of 30120743231 in words is "thirty billion, one hundred twenty million, seven hundred forty-three thousand, two hundred thirty-one".