31112466161 has 12 divisors (see below), whose sum is σ = 38096898480. Its totient is φ = 25264257480.

The previous prime is 31112466127. The next prime is 31112466181. The reversal of 31112466161 is 16166421113.

It is not a de Polignac number, because 31112466161 - 2¹⁸ = 31112204017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31112466181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16708235 + ... + 16710096.

It is an arithmetic number, because the mean of its divisors is an integer number (3174741540).

Almost surely, 2^31112466161 is an apocalyptic number.

It is an amenable number.

31112466161 is a deficient number, since it is larger than the sum of its proper divisors (6984432319).

31112466161 is a wasteful number, since it uses less digits than its factorization.

31112466161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33418364 (or 33418357 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

Adding to 31112466161 its reverse (16166421113), we get a palindrome (47278887274).

The spelling of 31112466161 in words is "thirty-one billion, one hundred twelve million, four hundred sixty-six thousand, one hundred sixty-one".