1331210230321 has 8 divisors (see below), whose sum is σ = 1364966441064. Its totient is φ = 1297773984000.

The previous prime is 1331210230243. The next prime is 1331210230331. The reversal of 1331210230321 is 1230320121331.

It can be written as a sum of positive squares in 4 ways, for example, as 3426463296 + 1327783767025 = 58536^2 + 1152295^2 .

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 1331210230321 - 2¹⁷ = 1331210099249 is a prime.

It is a super-2 number, since 2×1331210230321² (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 = 1331210230292 and 1331210230301.

It is not an unprimeable number, because it can be changed into a prime (1331210230331) 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, 79982680 + ... + 79999321.

It is an arithmetic number, because the mean of its divisors is an integer number (170620805133).

Almost surely, 2^{1331210230321} is an apocalyptic number.

It is an amenable number.

1331210230321 is a deficient number, since it is larger than the sum of its proper divisors (33756210743).

1331210230321 is a wasteful number, since it uses less digits than its factorization.

1331210230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159982211.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1331210230321 its reverse (1230320121331), we get a palindrome (2561530351652).

The spelling of 1331210230321 in words is "one trillion, three hundred thirty-one billion, two hundred ten million, two hundred thirty thousand, three hundred twenty-one".