131231230313 has 8 divisors (see below), whose sum is σ = 132382360320. Its totient is φ = 130084091280.

The previous prime is 131231230309. The next prime is 131231230367. The reversal of 131231230313 is 313032132131.

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 131231230313 - 2² = 131231230309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131231230303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931673 + ... + 1063238.

It is an arithmetic number, because the mean of its divisors is an integer number (16547795040).

Almost surely, 2^131231230313 is an apocalyptic number.

It is an amenable number.

131231230313 is a deficient number, since it is larger than the sum of its proper divisors (1151130007).

131231230313 is a wasteful number, since it uses less digits than its factorization.

131231230313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995487.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 131231230313 its reverse (313032132131), we get a palindrome (444263362444).

The spelling of 131231230313 in words is "one hundred thirty-one billion, two hundred thirty-one million, two hundred thirty thousand, three hundred thirteen".