31166060456161 has 4 divisors (see below), whose sum is σ = 31167922133524. Its totient is φ = 31164198778800.

The previous prime is 31166060456137. The next prime is 31166060456177. The reversal of 31166060456161 is 16165406066113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23218481925136 + 7947578531025 = 4818556^2 + 2819145^2 .

It is a cyclic number.

It is not a de Polignac number, because 31166060456161 - 2⁵ = 31166060456129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31166060456761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930813570 + ... + 930847051.

It is an arithmetic number, because the mean of its divisors is an integer number (7791980533381).

Almost surely, 2^{31166060456161} is an apocalyptic number.

It is an amenable number.

31166060456161 is a deficient number, since it is larger than the sum of its proper divisors (1861677363).

31166060456161 is a wasteful number, since it uses less digits than its factorization.

31166060456161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861677362.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 31166060456161 in words is "thirty-one trillion, one hundred sixty-six billion, sixty million, four hundred fifty-six thousand, one hundred sixty-one".