131224042445 has 8 divisors (see below), whose sum is σ = 159027949080. Its totient is φ = 103939835200.

The previous prime is 131224042429. The next prime is 131224042463. The reversal of 131224042445 is 544240422131.

It can be written as a sum of positive squares in 4 ways, for example, as 69275819209 + 61948223236 = 263203^2 + 248894^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131224042445 - 2⁴ = 131224042429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129924290 + ... + 129925299.

It is an arithmetic number, because the mean of its divisors is an integer number (19878493635).

Almost surely, 2^131224042445 is an apocalyptic number.

It is an amenable number.

131224042445 is a deficient number, since it is larger than the sum of its proper divisors (27803906635).

131224042445 is a wasteful number, since it uses less digits than its factorization.

131224042445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259849695.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 131224042445 its reverse (544240422131), we get a palindrome (675464464576).

The spelling of 131224042445 in words is "one hundred thirty-one billion, two hundred twenty-four million, forty-two thousand, four hundred forty-five".