131345532220040 has 128 divisors (see below), whose sum is σ = 297381375596160. Its totient is φ = 52209891385344.

The previous prime is 131345532220031. The next prime is 131345532220057. The reversal of 131345532220040 is 40022235543131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6519349247 + ... + 6519369393.

It is an arithmetic number, because the mean of its divisors is an integer number (2323291996845).

Almost surely, 2^{131345532220040} is an apocalyptic number.

131345532220040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131345532220040 is an abundant number, since it is smaller than the sum of its proper divisors (166035843376120).

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

131345532220040 is a wasteful number, since it uses less digits than its factorization.

131345532220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22071 (or 22067 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 131345532220040 its reverse (40022235543131), we get a palindrome (171367767763171).

The spelling of 131345532220040 in words is "one hundred thirty-one trillion, three hundred forty-five billion, five hundred thirty-two million, two hundred twenty thousand, forty".