160231631681 has 12 divisors (see below), whose sum is σ = 176299157076. Its totient is φ = 145518906720.

The previous prime is 160231631647. The next prime is 160231631711. The reversal of 160231631681 is 186136132061.

It can be written as a sum of positive squares in 2 ways, for example, as 109306939456 + 50924692225 = 330616^2 + 225665^2 .

It is a de Polignac number, because none of the positive numbers 2^k-160231631681 is a prime.

It is a super-2 number, since 2×160231631681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (160231631881) 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 11 ways as a sum of consecutive naturals, for example, 543470 + ... + 784743.

It is an arithmetic number, because the mean of its divisors is an integer number (14691596423).

Almost surely, 2^160231631681 is an apocalyptic number.

160231631681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

160231631681 is a deficient number, since it is larger than the sum of its proper divisors (16067525395).

160231631681 is a wasteful number, since it uses less digits than its factorization.

160231631681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329232 (or 1329221 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 160231631681 in words is "one hundred sixty billion, two hundred thirty-one million, six hundred thirty-one thousand, six hundred eighty-one".