30835968391 has 2 divisors, whose sum is σ = 30835968392. Its totient is φ = 30835968390.

The previous prime is 30835968341. The next prime is 30835968473. The reversal of 30835968391 is 19386953803.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30835968391 - 2¹⁵ = 30835935623 is a prime.

It is a super-2 number, since 2×30835968391² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30835968341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15417984195 + 15417984196.

It is an arithmetic number, because the mean of its divisors is an integer number (15417984196).

Almost surely, 2^30835968391 is an apocalyptic number.

30835968391 is a deficient number, since it is larger than the sum of its proper divisors (1).

30835968391 is an equidigital number, since it uses as much as digits as its factorization.

30835968391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 30835968391 in words is "thirty billion, eight hundred thirty-five million, nine hundred sixty-eight thousand, three hundred ninety-one".