131023320212 has 24 divisors (see below), whose sum is σ = 230492265696. Its totient is φ = 65168496288.

The previous prime is 131023320203. The next prime is 131023320331. The reversal of 131023320212 is 212023320131.

It is a super-2 number, since 2×131023320212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7400723 + ... + 7418405.

It is an arithmetic number, because the mean of its divisors is an integer number (9603844404).

Almost surely, 2^131023320212 is an apocalyptic number.

It is an amenable number.

131023320212 is a deficient number, since it is larger than the sum of its proper divisors (99468945484).

131023320212 is a wasteful number, since it uses less digits than its factorization.

131023320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27287 (or 27285 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131023320212 its reverse (212023320131), we get a palindrome (343046640343).

The spelling of 131023320212 in words is "one hundred thirty-one billion, twenty-three million, three hundred twenty thousand, two hundred twelve".