131223204111442 has 32 divisors (see below), whose sum is σ = 209713463709120. Its totient is φ = 61402842083520.

The previous prime is 131223204111343. The next prime is 131223204111457. The reversal of 131223204111442 is 244111402322131.

It is a super-2 number, since 2×131223204111442² (a number of 29 digits) contains 22 as substring.

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, 27071592 + ... + 31548652.

It is an arithmetic number, because the mean of its divisors is an integer number (6553545740910).

Almost surely, 2^{131223204111442} is an apocalyptic number.

131223204111442 is a deficient number, since it is larger than the sum of its proper divisors (78490259597678).

131223204111442 is a wasteful number, since it uses less digits than its factorization.

131223204111442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486458.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 131223204111442 its reverse (244111402322131), we get a palindrome (375334606433573).

The spelling of 131223204111442 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, two hundred four million, one hundred eleven thousand, four hundred forty-two".