131423131421312 has 16 divisors (see below), whose sum is σ = 261819519628650. Its totient is φ = 65711565710592.

The previous prime is 131423131421303. The next prime is 131423131421353. The reversal of 131423131421312 is 213124131324131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 107558968492096 + 23864162929216 = 10371064^2 + 4885096^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513371606987 + ... + 513371607242.

Almost surely, 2^{131423131421312} is an apocalyptic number.

It is an amenable number.

131423131421312 is a deficient number, since it is larger than the sum of its proper divisors (130396388207338).

131423131421312 is an equidigital number, since it uses as much as digits as its factorization.

131423131421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026743214243 (or 1026743214231 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

Adding to 131423131421312 its reverse (213124131324131), we get a palindrome (344547262745443).

The spelling of 131423131421312 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, one hundred thirty-one million, four hundred twenty-one thousand, three hundred twelve".