30961808069 has 2 divisors, whose sum is σ = 30961808070. Its totient is φ = 30961808068.

The previous prime is 30961808057. The next prime is 30961808071. The reversal of 30961808069 is 96080816903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22056111169 + 8905696900 = 148513^2 + 94370^2 .

It is a cyclic number.

It is not a de Polignac number, because 30961808069 - 2¹⁶ = 30961742533 is a prime.

It is a super-2 number, since 2×30961808069² (a number of 22 digits) contains 22 as substring.

Together with 30961808071, 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 (30961808029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15480904034 + 15480904035.

It is an arithmetic number, because the mean of its divisors is an integer number (15480904035).

Almost surely, 2^30961808069 is an apocalyptic number.

It is an amenable number.

30961808069 is a deficient number, since it is larger than the sum of its proper divisors (1).

30961808069 is an equidigital number, since it uses as much as digits as its factorization.

30961808069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 30961808069 in words is "thirty billion, nine hundred sixty-one million, eight hundred eight thousand, sixty-nine".