1023323131331 has 4 divisors (see below), whose sum is σ = 1023446476152. Its totient is φ = 1023199786512.

The previous prime is 1023323131319. The next prime is 1023323131333. The reversal of 1023323131331 is 1331313233201.

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-1023323131331 is a prime.

It is a super-2 number, since 2×1023323131331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023323131331.

It is not an unprimeable number, because it can be changed into a prime (1023323131333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61659965 + ... + 61676558.

It is an arithmetic number, because the mean of its divisors is an integer number (255861619038).

Almost surely, 2^{1023323131331} is an apocalyptic number.

1023323131331 is a deficient number, since it is larger than the sum of its proper divisors (123344821).

1023323131331 is an equidigital number, since it uses as much as digits as its factorization.

1023323131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123344820.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1023323131331 its reverse (1331313233201), we get a palindrome (2354636364532).

The spelling of 1023323131331 in words is "one trillion, twenty-three billion, three hundred twenty-three million, one hundred thirty-one thousand, three hundred thirty-one".