131311103220221 has 8 divisors (see below), whose sum is σ = 132787898643840. Its totient is φ = 129839255185968.

The previous prime is 131311103220161. The next prime is 131311103220259. The reversal of 131311103220221 is 122022301113131.

It is a happy number.

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 131311103220221 - 2²⁶ = 131311036111357 is a prime.

It is a super-3 number, since 3×131311103220221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131311103225221) 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, 1236793961 + ... + 1236900126.

It is an arithmetic number, because the mean of its divisors is an integer number (16598487330480).

Almost surely, 2^{131311103220221} is an apocalyptic number.

It is an amenable number.

131311103220221 is a deficient number, since it is larger than the sum of its proper divisors (1476795423619).

131311103220221 is a wasteful number, since it uses less digits than its factorization.

131311103220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473694683.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131311103220221 its reverse (122022301113131), we get a palindrome (253333404333352).

The spelling of 131311103220221 in words is "one hundred thirty-one trillion, three hundred eleven billion, one hundred three million, two hundred twenty thousand, two hundred twenty-one".