131344223305 has 16 divisors (see below), whose sum is σ = 158206389264. Its totient is φ = 104680442880.

The previous prime is 131344223279. The next prime is 131344223317. The reversal of 131344223305 is 503322443131.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 20564420409 + 110779802896 = 143403^2 + 332836^2 .

It is not a de Polignac number, because 131344223305 - 2¹⁷ = 131344092233 is a prime.

It is a Duffinian number.

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 in 15 ways as a sum of consecutive naturals, for example, 1709925 + ... + 1785085.

It is an arithmetic number, because the mean of its divisors is an integer number (9887899329).

Almost surely, 2^131344223305 is an apocalyptic number.

It is an amenable number.

131344223305 is a deficient number, since it is larger than the sum of its proper divisors (26862165959).

131344223305 is an equidigital number, since it uses as much as digits as its factorization.

131344223305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76476.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 131344223305 its reverse (503322443131), we get a palindrome (634666666436).

The spelling of 131344223305 in words is "one hundred thirty-one billion, three hundred forty-four million, two hundred twenty-three thousand, three hundred five".