1020131323 has 4 divisors (see below), whose sum is σ = 1020677848. Its totient is φ = 1019584800.

The previous prime is 1020131317. The next prime is 1020131383. The reversal of 1020131323 is 3231310201.

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-1020131323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020131297 and 1020131306.

It is not an unprimeable number, because it can be changed into a prime (1020131303) 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, 270453 + ... + 274198.

It is an arithmetic number, because the mean of its divisors is an integer number (255169462).

Almost surely, 2^1020131323 is an apocalyptic number.

1020131323 is a deficient number, since it is larger than the sum of its proper divisors (546525).

1020131323 is an equidigital number, since it uses as much as digits as its factorization.

1020131323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546524.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1020131323 is about 31939.4947204867. The cubic root of 1020131323 is about 1006.6659079396.

Adding to 1020131323 its reverse (3231310201), we get a palindrome (4251441524).

The spelling of 1020131323 in words is "one billion, twenty million, one hundred thirty-one thousand, three hundred twenty-three".