131423221342442 has 32 divisors (see below), whose sum is σ = 215467083417600. Its totient is φ = 59850397175040.

The previous prime is 131423221342403. The next prime is 131423221342451. The reversal of 131423221342442 is 244243122324131.

It is a junction number, because it is equal to n+sod(n) for n = 131423221342396 and 131423221342405.

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, 83699183 + ... + 85254909.

It is an arithmetic number, because the mean of its divisors is an integer number (6733346356800).

Almost surely, 2^{131423221342442} is an apocalyptic number.

131423221342442 is a deficient number, since it is larger than the sum of its proper divisors (84043862075158).

131423221342442 is a wasteful number, since it uses less digits than its factorization.

131423221342442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635926.

The product of its digits is 221184, while the sum is 38.

Adding to 131423221342442 its reverse (244243122324131), we get a palindrome (375666343666573).

The spelling of 131423221342442 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, two hundred twenty-one million, three hundred forty-two thousand, four hundred forty-two".