131221330240331 has 8 divisors (see below), whose sum is σ = 138985801189200. Its totient is φ = 123461922532608.

The previous prime is 131221330240313. The next prime is 131221330240361. The reversal of 131221330240331 is 133042033122131.

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 131221330240331 - 2⁶ = 131221330240267 is a prime.

It is a super-2 number, since 2×131221330240331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131221330240294 and 131221330240303.

It is not an unprimeable number, because it can be changed into a prime (131221330240361) 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, 1265756921 + ... + 1265860586.

It is an arithmetic number, because the mean of its divisors is an integer number (17373225148650).

Almost surely, 2^{131221330240331} is an apocalyptic number.

131221330240331 is a deficient number, since it is larger than the sum of its proper divisors (7764470948869).

131221330240331 is a wasteful number, since it uses less digits than its factorization.

131221330240331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531620573.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 131221330240331 its reverse (133042033122131), we get a palindrome (264263363362462).

The spelling of 131221330240331 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred thirty million, two hundred forty thousand, three hundred thirty-one".