131223123222404 has 6 divisors (see below), whose sum is σ = 229640465639214. Its totient is φ = 65611561611200.

The previous prime is 131223123222361. The next prime is 131223123222481. The reversal of 131223123222404 is 404222321322131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130742530432900 + 480592789504 = 11434270^2 + 693248^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16402890402797 + ... + 16402890402804.

It is an arithmetic number, because the mean of its divisors is an integer number (38273410939869).

Almost surely, 2^{131223123222404} is an apocalyptic number.

It is an amenable number.

131223123222404 is a deficient number, since it is larger than the sum of its proper divisors (98417342416810).

131223123222404 is a wasteful number, since it uses less digits than its factorization.

131223123222404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32805780805605 (or 32805780805603 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 131223123222404 its reverse (404222321322131), we get a palindrome (535445444544535).

The spelling of 131223123222404 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, one hundred twenty-three million, two hundred twenty-two thousand, four hundred four".