131322131131 has 4 divisors (see below), whose sum is σ = 139046962392. Its totient is φ = 123597299872.

The previous prime is 131322131123. The next prime is 131322131137. The reversal of 131322131131 is 131131223131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131322131131 - 2³ = 131322131123 is a prime.

It is a super-2 number, since 2×131322131131² (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 (131322131137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3862415605 + ... + 3862415638.

It is an arithmetic number, because the mean of its divisors is an integer number (34761740598).

Almost surely, 2^131322131131 is an apocalyptic number.

131322131131 is a deficient number, since it is larger than the sum of its proper divisors (7724831261).

131322131131 is an equidigital number, since it uses as much as digits as its factorization.

131322131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7724831260.

The product of its digits is 324, while the sum is 22.

Adding to 131322131131 its reverse (131131223131), we get a palindrome (262453354262).

The spelling of 131322131131 in words is "one hundred thirty-one billion, three hundred twenty-two million, one hundred thirty-one thousand, one hundred thirty-one".