30993651349 has 2 divisors, whose sum is σ = 30993651350. Its totient is φ = 30993651348.

The previous prime is 30993651347. The next prime is 30993651457. The reversal of 30993651349 is 94315639903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16398595249 + 14595056100 = 128057^2 + 120810^2 .

It is an emirp because it is prime and its reverse (94315639903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30993651349 - 2¹ = 30993651347 is a prime.

Together with 30993651347, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30993651296 and 30993651305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30993651347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15496825674 + 15496825675.

It is an arithmetic number, because the mean of its divisors is an integer number (15496825675).

Almost surely, 2^30993651349 is an apocalyptic number.

It is an amenable number.

30993651349 is a deficient number, since it is larger than the sum of its proper divisors (1).

30993651349 is an equidigital number, since it uses as much as digits as its factorization.

30993651349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2361960, while the sum is 52.

The spelling of 30993651349 in words is "thirty billion, nine hundred ninety-three million, six hundred fifty-one thousand, three hundred forty-nine".