30634031681 has 4 divisors (see below), whose sum is σ = 33418943664. Its totient is φ = 27849119700.

The previous prime is 30634031657. The next prime is 30634031713. The reversal of 30634031681 is 18613043603.

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 a cyclic number.

It is not a de Polignac number, because 30634031681 - 2¹⁴ = 30634015297 is a prime.

It is a super-2 number, since 2×30634031681² (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 (30634031621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1392455975 + ... + 1392455996.

It is an arithmetic number, because the mean of its divisors is an integer number (8354735916).

Almost surely, 2^30634031681 is an apocalyptic number.

It is an amenable number.

30634031681 is a deficient number, since it is larger than the sum of its proper divisors (2784911983).

30634031681 is a wasteful number, since it uses less digits than its factorization.

30634031681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784911982.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 30634031681 in words is "thirty billion, six hundred thirty-four million, thirty-one thousand, six hundred eighty-one".