131342434140 has 96 divisors (see below), whose sum is σ = 374809216320. Its totient is φ = 34359552000.

The previous prime is 131342434133. The next prime is 131342434177. The reversal of 131342434140 is 41434243131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 131342434098 and 131342434107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 561120 + ... + 759960.

It is an arithmetic number, because the mean of its divisors is an integer number (3904262670).

Almost surely, 2^131342434140 is an apocalyptic number.

131342434140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131342434140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187404608160).

131342434140 is an abundant number, since it is smaller than the sum of its proper divisors (243466782180).

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

131342434140 is a wasteful number, since it uses less digits than its factorization.

131342434140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199063 (or 199061 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 131342434140 its reverse (41434243131), we get a palindrome (172776677271).

The spelling of 131342434140 in words is "one hundred thirty-one billion, three hundred forty-two million, four hundred thirty-four thousand, one hundred forty".