131402230323440 has 80 divisors (see below), whose sum is σ = 311065840512000. Its totient is φ = 51607245486336.

The previous prime is 131402230323439. The next prime is 131402230323473. The reversal of 131402230323440 is 44323032204131.

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

It is a super-2 number, since 2×131402230323440² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131402230323397 and 131402230323406.

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, 13028840 + ... + 20797959.

It is an arithmetic number, because the mean of its divisors is an integer number (3888323006400).

Almost surely, 2^{131402230323440} is an apocalyptic number.

131402230323440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131402230323440 is an abundant number, since it is smaller than the sum of its proper divisors (179663610188560).

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

131402230323440 is a wasteful number, since it uses less digits than its factorization.

131402230323440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33827694 (or 33827688 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 131402230323440 its reverse (44323032204131), we get a palindrome (175725262527571).

The spelling of 131402230323440 in words is "one hundred thirty-one trillion, four hundred two billion, two hundred thirty million, three hundred twenty-three thousand, four hundred forty".