1331031443121 has 6 divisors (see below), whose sum is σ = 1922600973410. Its totient is φ = 887354295408.

The previous prime is 1331031442997. The next prime is 1331031443149. The reversal of 1331031443121 is 1213441301331.

1331031443121 is a `hidden beast` number, since 1 + 3 + 31 + 0 + 314 + 4 + 312 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1050461006400 + 280570436721 = 1024920^2 + 529689^2 .

It is not a de Polignac number, because 1331031443121 - 2²¹ = 1331029345969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331031443191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73946191276 + ... + 73946191293.

Almost surely, 2^{1331031443121} is an apocalyptic number.

It is an amenable number.

1331031443121 is a deficient number, since it is larger than the sum of its proper divisors (591569530289).

1331031443121 is a wasteful number, since it uses less digits than its factorization.

1331031443121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147892382575 (or 147892382572 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 1331031443121 its reverse (1213441301331), we get a palindrome (2544472744452).

The spelling of 1331031443121 in words is "one trillion, three hundred thirty-one billion, thirty-one million, four hundred forty-three thousand, one hundred twenty-one".