131120324545 has 8 divisors (see below), whose sum is σ = 179822159424. Its totient is φ = 89911079664.

The previous prime is 131120324519. The next prime is 131120324549. The reversal of 131120324545 is 545423021131.

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

It is a de Polignac number, because none of the positive numbers 2^k-131120324545 is a prime.

It is a super-2 number, since 2×131120324545² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131120324549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873147459 + ... + 1873147528.

It is an arithmetic number, because the mean of its divisors is an integer number (22477769928).

Almost surely, 2^131120324545 is an apocalyptic number.

It is an amenable number.

131120324545 is a deficient number, since it is larger than the sum of its proper divisors (48701834879).

131120324545 is an equidigital number, since it uses as much as digits as its factorization.

131120324545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746294999.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 131120324545 its reverse (545423021131), we get a palindrome (676543345676).

The spelling of 131120324545 in words is "one hundred thirty-one billion, one hundred twenty million, three hundred twenty-four thousand, five hundred forty-five".