30313051091 has 2 divisors, whose sum is σ = 30313051092. Its totient is φ = 30313051090.

The previous prime is 30313051073. The next prime is 30313051127. The reversal of 30313051091 is 19015031303.

It is a weak prime.

It is an emirp because it is prime and its reverse (19015031303) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30313051091 is a prime.

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 30313051091.

It is not a weakly prime, because it can be changed into another prime (30313051001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156525545 + 15156525546.

It is an arithmetic number, because the mean of its divisors is an integer number (15156525546).

Almost surely, 2^30313051091 is an apocalyptic number.

30313051091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30313051091 is an equidigital number, since it uses as much as digits as its factorization.

30313051091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 26.

Adding to 30313051091 its reverse (19015031303), we get a palindrome (49328082394).

The spelling of 30313051091 in words is "thirty billion, three hundred thirteen million, fifty-one thousand, ninety-one".