131302313021 has 16 divisors (see below), whose sum is σ = 144744667200. Its totient is φ = 118111418880.

The previous prime is 131302313017. The next prime is 131302313029. The reversal of 131302313021 is 120313203131.

It is a cyclic number.

It is not a de Polignac number, because 131302313021 - 2² = 131302313017 is a prime.

It is a super-2 number, since 2×131302313021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131302312984 and 131302313002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131302313029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7352315 + ... + 7370151.

It is an arithmetic number, because the mean of its divisors is an integer number (9046541700).

Almost surely, 2^131302313021 is an apocalyptic number.

131302313021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131302313021 is a deficient number, since it is larger than the sum of its proper divisors (13442354179).

131302313021 is a wasteful number, since it uses less digits than its factorization.

131302313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24844.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131302313021 its reverse (120313203131), we get a palindrome (251615516152).

The spelling of 131302313021 in words is "one hundred thirty-one billion, three hundred two million, three hundred thirteen thousand, twenty-one".