131313012021 has 24 divisors (see below), whose sum is σ = 199840499040. Its totient is φ = 82858399200.

The previous prime is 131313012001. The next prime is 131313012041. The reversal of 131313012021 is 120210313131.

131313012021 is a `hidden beast` number, since 131 + 31 + 301 + 202 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (131313012001) and next prime (131313012041).

It is not a de Polignac number, because 131313012021 - 2⁹ = 131313011509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131313011985 and 131313012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131313012001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165370 + ... + 538491.

It is an arithmetic number, because the mean of its divisors is an integer number (8326687460).

Almost surely, 2^131313012021 is an apocalyptic number.

It is an amenable number.

131313012021 is a deficient number, since it is larger than the sum of its proper divisors (68527487019).

131313012021 is a wasteful number, since it uses less digits than its factorization.

131313012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704977 (or 704974 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131313012021 its reverse (120210313131), we get a palindrome (251523325152).

The spelling of 131313012021 in words is "one hundred thirty-one billion, three hundred thirteen million, twelve thousand, twenty-one".