131155434340 has 48 divisors (see below), whose sum is σ = 322093360512. Its totient is φ = 43921817856.

The previous prime is 131155434337. The next prime is 131155434349. The reversal of 131155434340 is 43434551131.

It is a junction number, because it is equal to n+sod(n) for n = 131155434296 and 131155434305.

It is not an unprimeable number, because it can be changed into a prime (131155434349) 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, 10887289 + ... + 10899328.

It is an arithmetic number, because the mean of its divisors is an integer number (6710278344).

Almost surely, 2^131155434340 is an apocalyptic number.

131155434340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131155434340 is an abundant number, since it is smaller than the sum of its proper divisors (190937926172).

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

131155434340 is a wasteful number, since it uses less digits than its factorization.

131155434340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21786676 (or 21786674 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 131155434340 its reverse (43434551131), we get a palindrome (174589985471).

The spelling of 131155434340 in words is "one hundred thirty-one billion, one hundred fifty-five million, four hundred thirty-four thousand, three hundred forty".