131202134133440 has 56 divisors (see below), whose sum is σ = 313826091411840. Its totient is φ = 52245513474048.

The previous prime is 131202134133437. The next prime is 131202134133503. The reversal of 131202134133440 is 44331431202131.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 131202134133397 and 131202134133406.

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, 919226105 + ... + 919368824.

It is an arithmetic number, because the mean of its divisors is an integer number (5604037346640).

Almost surely, 2^{131202134133440} is an apocalyptic number.

131202134133440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131202134133440 is an abundant number, since it is smaller than the sum of its proper divisors (182623957278400).

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

131202134133440 is a wasteful number, since it uses less digits than its factorization.

131202134133440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838595169 (or 1838595159 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 131202134133440 its reverse (44331431202131), we get a palindrome (175533565335571).

The spelling of 131202134133440 in words is "one hundred thirty-one trillion, two hundred two billion, one hundred thirty-four million, one hundred thirty-three thousand, four hundred forty".