131005322545 has 8 divisors (see below), whose sum is σ = 157718461824. Its totient is φ = 104462874864.

The previous prime is 131005322521. The next prime is 131005322551. The reversal of 131005322545 is 545223500131.

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

It is a cyclic number.

It is not a de Polignac number, because 131005322545 - 2¹³ = 131005314353 is a prime.

It is a Duffinian 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, 42671209 + ... + 42674278.

It is an arithmetic number, because the mean of its divisors is an integer number (19714807728).

Almost surely, 2^131005322545 is an apocalyptic number.

It is an amenable number.

131005322545 is a deficient number, since it is larger than the sum of its proper divisors (26713139279).

131005322545 is an equidigital number, since it uses as much as digits as its factorization.

131005322545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85345799.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 131005322545 its reverse (545223500131), we get a palindrome (676228822676).

The spelling of 131005322545 in words is "one hundred thirty-one billion, five million, three hundred twenty-two thousand, five hundred forty-five".