30971344969 has 2 divisors, whose sum is σ = 30971344970. Its totient is φ = 30971344968.

The previous prime is 30971344967. The next prime is 30971344981. The reversal of 30971344969 is 96944317903.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30721325625 + 250019344 = 175275^2 + 15812^2 .

It is a cyclic number.

It is not a de Polignac number, because 30971344969 - 2¹ = 30971344967 is a prime.

It is a super-2 number, since 2×30971344969² (a number of 22 digits) contains 22 as substring.

Together with 30971344967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30971344967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15485672484 + 15485672485.

It is an arithmetic number, because the mean of its divisors is an integer number (15485672485).

Almost surely, 2^30971344969 is an apocalyptic number.

It is an amenable number.

30971344969 is a deficient number, since it is larger than the sum of its proper divisors (1).

30971344969 is an equidigital number, since it uses as much as digits as its factorization.

30971344969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The spelling of 30971344969 in words is "thirty billion, nine hundred seventy-one million, three hundred forty-four thousand, nine hundred sixty-nine".