131023321320 has 128 divisors (see below), whose sum is σ = 419933836800. Its totient is φ = 32606551296.

The previous prime is 131023321313. The next prime is 131023321337. The reversal of 131023321320 is 23123320131.

It is a super-2 number, since 2×131023321320² (a number of 23 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 276094 + ... + 581613.

It is an arithmetic number, because the mean of its divisors is an integer number (3280733100).

Almost surely, 2^131023321320 is an apocalyptic number.

131023321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131023321320 is an abundant number, since it is smaller than the sum of its proper divisors (288910515480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131023321320 is a wasteful number, since it uses less digits than its factorization.

131023321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857807 (or 857803 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 131023321320 its reverse (23123320131), we get a palindrome (154146641451).

The spelling of 131023321320 in words is "one hundred thirty-one billion, twenty-three million, three hundred twenty-one thousand, three hundred twenty".