1331202134323 has 4 divisors (see below), whose sum is σ = 1374144138688. Its totient is φ = 1288260129960.

The previous prime is 1331202134303. The next prime is 1331202134329. The reversal of 1331202134323 is 3234312021331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331202134323 is a prime.

It is a super-2 number, since 2×1331202134323² (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 = 1331202134291 and 1331202134300.

It is not an unprimeable number, because it can be changed into a prime (1331202134329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21471002136 + ... + 21471002197.

It is an arithmetic number, because the mean of its divisors is an integer number (343536034672).

Almost surely, 2^{1331202134323} is an apocalyptic number.

1331202134323 is a deficient number, since it is larger than the sum of its proper divisors (42942004365).

1331202134323 is an equidigital number, since it uses as much as digits as its factorization.

1331202134323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42942004364.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1331202134323 its reverse (3234312021331), we get a palindrome (4565514155654).

The spelling of 1331202134323 in words is "one trillion, three hundred thirty-one billion, two hundred two million, one hundred thirty-four thousand, three hundred twenty-three".