131343232021340 has 24 divisors (see below), whose sum is σ = 276179461902960. Its totient is φ = 52468973826048.

The previous prime is 131343232021333. The next prime is 131343232021363. The reversal of 131343232021340 is 43120232343131.

It is a junction number, because it is equal to n+sod(n) for n = 131343232021297 and 131343232021306.

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, 4269920642 + ... + 4269951401.

It is an arithmetic number, because the mean of its divisors is an integer number (11507477579290).

Almost surely, 2^{131343232021340} is an apocalyptic number.

131343232021340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131343232021340 is an abundant number, since it is smaller than the sum of its proper divisors (144836229881620).

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

131343232021340 is a wasteful number, since it uses less digits than its factorization.

131343232021340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539872821 (or 8539872819 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 131343232021340 its reverse (43120232343131), we get a palindrome (174463464364471).

The spelling of 131343232021340 in words is "one hundred thirty-one trillion, three hundred forty-three billion, two hundred thirty-two million, twenty-one thousand, three hundred forty".