1331323112023 has 4 divisors (see below), whose sum is σ = 1332589833448. Its totient is φ = 1330056390600.

The previous prime is 1331323111883. The next prime is 1331323112059. The reversal of 1331323112023 is 3202113231331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331323112023 - 2²¹ = 1331321014871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331323112323) 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, 633359136 + ... + 633361237.

It is an arithmetic number, because the mean of its divisors is an integer number (333147458362).

Almost surely, 2^{1331323112023} is an apocalyptic number.

1331323112023 is a deficient number, since it is larger than the sum of its proper divisors (1266721425).

1331323112023 is a wasteful number, since it uses less digits than its factorization.

1331323112023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266721424.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1331323112023 its reverse (3202113231331), we get a palindrome (4533436343354).

The spelling of 1331323112023 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-three million, one hundred twelve thousand, twenty-three".