30971346861 has 32 divisors (see below), whose sum is σ = 53814475008. Its totient is φ = 15375559680.

The previous prime is 30971346841. The next prime is 30971346881. The reversal of 30971346861 is 16864317903.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30971346841) and next prime (30971346881).

It is not a de Polignac number, because 30971346861 - 2¹⁹ = 30970822573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30971346861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30971346811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3332070 + ... + 3341351.

It is an arithmetic number, because the mean of its divisors is an integer number (1681702344).

Almost surely, 2^30971346861 is an apocalyptic number.

It is an amenable number.

30971346861 is a deficient number, since it is larger than the sum of its proper divisors (22843128147).

30971346861 is a wasteful number, since it uses less digits than its factorization.

30971346861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673461.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 30971346861 in words is "thirty billion, nine hundred seventy-one million, three hundred forty-six thousand, eight hundred sixty-one".