131221314430342 has 32 divisors (see below), whose sum is σ = 211191537564000. Its totient is φ = 60963307603200.

The previous prime is 131221314430333. The next prime is 131221314430357. The reversal of 131221314430342 is 243034413122131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131221314430298 and 131221314430307.

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, 80293759 + ... + 81911722.

It is an arithmetic number, because the mean of its divisors is an integer number (6599735548875).

Almost surely, 2^{131221314430342} is an apocalyptic number.

131221314430342 is a deficient number, since it is larger than the sum of its proper divisors (79970223133658).

131221314430342 is a wasteful number, since it uses less digits than its factorization.

131221314430342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162205912.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 131221314430342 its reverse (243034413122131), we get a palindrome (374255727552473).

The spelling of 131221314430342 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred fourteen million, four hundred thirty thousand, three hundred forty-two".