131106445 has 16 divisors (see below), whose sum is σ = 159043248. Its totient is φ = 103749120.

The previous prime is 131106439. The next prime is 131106473. The reversal of 131106445 is 544601131.

It can be written as a sum of positive squares in 8 ways, for example, as 27941796 + 103164649 = 5286^2 + 10157^2 .

It is not a de Polignac number, because 131106445 - 2⁵ = 131106413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286657 + ... + 287113.

It is an arithmetic number, because the mean of its divisors is an integer number (9940203).

Almost surely, 2^131106445 is an apocalyptic number.

It is an amenable number.

131106445 is a deficient number, since it is larger than the sum of its proper divisors (27936803).

131106445 is a wasteful number, since it uses less digits than its factorization.

131106445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 131106445 is about 11450.1722694464. The cubic root of 131106445 is about 508.0128298266.

Adding to 131106445 its reverse (544601131), we get a palindrome (675707576).

The spelling of 131106445 in words is "one hundred thirty-one million, one hundred six thousand, four hundred forty-five".