30686071297 has 6 divisors (see below), whose sum is σ = 35696042178. Its totient is φ = 26302346784.

The previous prime is 30686071261. The next prime is 30686071303. The reversal of 30686071297 is 79217068603.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18626517441 + 12059553856 = 136479^2 + 109816^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30686071297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 626246353 = 30686071297 / (3 + 0 + 6 + 8 + 6 + 0 + 7 + 1 + 2 + 9 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30686071297.

It is not an unprimeable number, because it can be changed into a prime (30686075297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 313123128 + ... + 313123225.

It is an arithmetic number, because the mean of its divisors is an integer number (5949340363).

Almost surely, 2^30686071297 is an apocalyptic number.

It is an amenable number.

30686071297 is a deficient number, since it is larger than the sum of its proper divisors (5009970881).

30686071297 is an equidigital number, since it uses as much as digits as its factorization.

30686071297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626246367 (or 626246360 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 30686071297 in words is "thirty billion, six hundred eighty-six million, seventy-one thousand, two hundred ninety-seven".