131020243140432 has 80 divisors (see below), whose sum is σ = 346821797109312. Its totient is φ = 42596228183040.

The previous prime is 131020243140401. The next prime is 131020243140497. The reversal of 131020243140432 is 234041342020131.

It is a super-2 number, since 2×131020243140432² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131020243140432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2358178 + ... + 16358529.

Almost surely, 2^{131020243140432} is an apocalyptic number.

131020243140432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131020243140432 is an abundant number, since it is smaller than the sum of its proper divisors (215801553968880).

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

131020243140432 is a wasteful number, since it uses less digits than its factorization.

131020243140432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18720316 (or 18720310 counting only the distinct ones).

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

Adding to 131020243140432 its reverse (234041342020131), we get a palindrome (365061585160563).

The spelling of 131020243140432 in words is "one hundred thirty-one trillion, twenty billion, two hundred forty-three million, one hundred forty thousand, four hundred thirty-two".