30631366161 has 32 divisors (see below), whose sum is σ = 49516502400. Its totient is φ = 18560240640.

The previous prime is 30631366147. The next prime is 30631366163. The reversal of 30631366161 is 16166313603.

30631366161 is a `hidden beast` number, since 3 + 0 + 6 + 3 + 1 + 36 + 616 + 1 = 666.

It is not a de Polignac number, because 30631366161 - 2¹⁰ = 30631365137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30631366163) 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, 1730725 + ... + 1748333.

It is an arithmetic number, because the mean of its divisors is an integer number (1547390700).

Almost surely, 2^30631366161 is an apocalyptic number.

It is an amenable number.

30631366161 is a deficient number, since it is larger than the sum of its proper divisors (18885136239).

30631366161 is a wasteful number, since it uses less digits than its factorization.

30631366161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23486 (or 23480 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

Adding to 30631366161 its reverse (16166313603), we get a palindrome (46797679764).

The spelling of 30631366161 in words is "thirty billion, six hundred thirty-one million, three hundred sixty-six thousand, one hundred sixty-one".