131321312331 has 8 divisors (see below), whose sum is σ = 191012817984. Its totient is φ = 79588674120.

The previous prime is 131321312327. The next prime is 131321312359. The reversal of 131321312331 is 133213123131.

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

It is not a de Polignac number, because 131321312331 - 2² = 131321312327 is a prime.

It is a super-2 number, since 2×131321312331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131321312321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1989716821 + ... + 1989716886.

It is an arithmetic number, because the mean of its divisors is an integer number (23876602248).

Almost surely, 2^131321312331 is an apocalyptic number.

131321312331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131321312331 is a deficient number, since it is larger than the sum of its proper divisors (59691505653).

131321312331 is a wasteful number, since it uses less digits than its factorization.

131321312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979433721.

The product of its digits is 972, while the sum is 24.

Adding to 131321312331 its reverse (133213123131), we get a palindrome (264534435462).

The spelling of 131321312331 in words is "one hundred thirty-one billion, three hundred twenty-one million, three hundred twelve thousand, three hundred thirty-one".