30742923791 has 2 divisors, whose sum is σ = 30742923792. Its totient is φ = 30742923790.

The previous prime is 30742923781. The next prime is 30742923793. The reversal of 30742923791 is 19732924703.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30742923791 - 2¹⁴ = 30742907407 is a prime.

Together with 30742923793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30742923793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15371461895 + 15371461896.

It is an arithmetic number, because the mean of its divisors is an integer number (15371461896).

Almost surely, 2^30742923791 is an apocalyptic number.

30742923791 is a deficient number, since it is larger than the sum of its proper divisors (1).

30742923791 is an equidigital number, since it uses as much as digits as its factorization.

30742923791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 30742923791 in words is "thirty billion, seven hundred forty-two million, nine hundred twenty-three thousand, seven hundred ninety-one".