131202222423440 has 80 divisors (see below), whose sum is σ = 349455084693120. Its totient is φ = 44876259563520.

The previous prime is 131202222423403. The next prime is 131202222423479. The reversal of 131202222423440 is 44324222202131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×131202222423440² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131202222423397 and 131202222423406.

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, 279347321 + ... + 279816600.

It is an arithmetic number, because the mean of its divisors is an integer number (4368188558664).

Almost surely, 2^{131202222423440} is an apocalyptic number.

131202222423440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131202222423440 is an abundant number, since it is smaller than the sum of its proper divisors (218252862269680).

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

131202222423440 is a wasteful number, since it uses less digits than its factorization.

131202222423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559164360 (or 559164354 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 131202222423440 its reverse (44324222202131), we get a palindrome (175526444625571).

The spelling of 131202222423440 in words is "one hundred thirty-one trillion, two hundred two billion, two hundred twenty-two million, four hundred twenty-three thousand, four hundred forty".