1321002431133 has 32 divisors (see below), whose sum is σ = 2255302164480. Its totient is φ = 667688132160.

The previous prime is 1321002431129. The next prime is 1321002431149. The reversal of 1321002431133 is 3311342001231.

It is not a de Polignac number, because 1321002431133 - 2² = 1321002431129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321002431533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77270173 + ... + 77287266.

It is an arithmetic number, because the mean of its divisors is an integer number (70478192640).

Almost surely, 2^{1321002431133} is an apocalyptic number.

It is an amenable number.

1321002431133 is a deficient number, since it is larger than the sum of its proper divisors (934299733347).

1321002431133 is a wasteful number, since it uses less digits than its factorization.

1321002431133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154557497.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1321002431133 its reverse (3311342001231), we get a palindrome (4632344432364).

The spelling of 1321002431133 in words is "one trillion, three hundred twenty-one billion, two million, four hundred thirty-one thousand, one hundred thirty-three".