30971000691 has 24 divisors (see below), whose sum is σ = 44939394864. Its totient is φ = 20553504000.

The previous prime is 30971000677. The next prime is 30971000729. The reversal of 30971000691 is 19600017903.

It is not a de Polignac number, because 30971000691 - 2¹³ = 30970992499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30971000651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6270775 + ... + 6275711.

It is an arithmetic number, because the mean of its divisors is an integer number (1872474786).

Almost surely, 2^30971000691 is an apocalyptic number.

30971000691 is a deficient number, since it is larger than the sum of its proper divisors (13968394173).

30971000691 is a wasteful number, since it uses less digits than its factorization.

30971000691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7971 (or 7968 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The spelling of 30971000691 in words is "thirty billion, nine hundred seventy-one million, six hundred ninety-one", and thus it is an aban number.