131021168 has 20 divisors (see below), whose sum is σ = 258016968. Its totient is φ = 64436160.

The previous prime is 131021167. The next prime is 131021239. The reversal of 131021168 is 861120131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66146 + ... + 68097.

Almost surely, 2^131021168 is an apocalyptic number.

It is an amenable number.

131021168 is a deficient number, since it is larger than the sum of its proper divisors (126995800).

131021168 is a wasteful number, since it uses less digits than its factorization.

131021168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134312 (or 134306 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 131021168 is about 11446.4478332800. The cubic root of 131021168 is about 507.9026618222.

Adding to 131021168 its reverse (861120131), we get a palindrome (992141299).

The spelling of 131021168 in words is "one hundred thirty-one million, twenty-one thousand, one hundred sixty-eight".