131210223131 has 8 divisors (see below), whose sum is σ = 141422980944. Its totient is φ = 121014560160.

The previous prime is 131210223103. The next prime is 131210223149. The reversal of 131210223131 is 131322012131.

It is a happy number.

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-131210223131 is a prime.

It is a super-2 number, since 2×131210223131² (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 (131210222131) 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, 4257761 + ... + 4288466.

It is an arithmetic number, because the mean of its divisors is an integer number (17677872618).

Almost surely, 2^131210223131 is an apocalyptic number.

131210223131 is a deficient number, since it is larger than the sum of its proper divisors (10212757813).

131210223131 is a wasteful number, since it uses less digits than its factorization.

131210223131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8547421.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131210223131 its reverse (131322012131), we get a palindrome (262532235262).

The spelling of 131210223131 in words is "one hundred thirty-one billion, two hundred ten million, two hundred twenty-three thousand, one hundred thirty-one".