131023313212 has 48 divisors (see below), whose sum is σ = 251052328800. Its totient is φ = 59338137600.

The previous prime is 131023313177. The next prime is 131023313231. The reversal of 131023313212 is 212313320131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14950912 + ... + 14959672.

It is an arithmetic number, because the mean of its divisors is an integer number (5230256850).

Almost surely, 2^131023313212 is an apocalyptic number.

It is an amenable number.

131023313212 is a deficient number, since it is larger than the sum of its proper divisors (120029015588).

131023313212 is a wasteful number, since it uses less digits than its factorization.

131023313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9982 (or 9980 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131023313212 its reverse (212313320131), we get a palindrome (343336633343).

The spelling of 131023313212 in words is "one hundred thirty-one billion, twenty-three million, three hundred thirteen thousand, two hundred twelve".