30969976881 has 4 divisors (see below), whose sum is σ = 41293302512. Its totient is φ = 20646651252.

The previous prime is 30969976853. The next prime is 30969976897. The reversal of 30969976881 is 18867996903.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30969976881 - 2⁹ = 30969976369 is a prime.

It is a super-2 number, since 2×30969976881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30969976781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5161662811 + ... + 5161662816.

It is an arithmetic number, because the mean of its divisors is an integer number (10323325628).

Almost surely, 2^30969976881 is an apocalyptic number.

It is an amenable number.

30969976881 is a deficient number, since it is larger than the sum of its proper divisors (10323325631).

30969976881 is a wasteful number, since it uses less digits than its factorization.

30969976881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10323325630.

The product of its (nonzero) digits is 35271936, while the sum is 66.

The spelling of 30969976881 in words is "thirty billion, nine hundred sixty-nine million, nine hundred seventy-six thousand, eight hundred eighty-one".