1331303220331 has 8 divisors (see below), whose sum is σ = 1521508186080. Its totient is φ = 1141102952448.

The previous prime is 1331303220323. The next prime is 1331303220337. The reversal of 1331303220331 is 1330223031331.

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 1331303220331 - 2³ = 1331303220323 is a prime.

It is a super-2 number, since 2×1331303220331² (a number of 25 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 = 1331303220296 and 1331303220305.

It is not an unprimeable number, because it can be changed into a prime (1331303220337) 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, 544696 + ... + 1720261.

It is an arithmetic number, because the mean of its divisors is an integer number (190188523260).

Almost surely, 2^{1331303220331} is an apocalyptic number.

1331303220331 is a deficient number, since it is larger than the sum of its proper divisors (190204965749).

1331303220331 is an equidigital number, since it uses as much as digits as its factorization.

1331303220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348933.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 1331303220331 its reverse (1330223031331), we get a palindrome (2661526251662).

The spelling of 1331303220331 in words is "one trillion, three hundred thirty-one billion, three hundred three million, two hundred twenty thousand, three hundred thirty-one".