1020311323 has 4 divisors (see below), whose sum is σ = 1027159200. Its totient is φ = 1013463448.

The previous prime is 1020311317. The next prime is 1020311329. The reversal of 1020311323 is 3231130201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3231130201 = 13 ⋅248548477.

It is an interprime number because it is at equal distance from previous prime (1020311317) and next prime (1020311329).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020311323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020311297 and 1020311306.

It is not an unprimeable number, because it can be changed into a prime (1020311329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3423715 + ... + 3424012.

It is an arithmetic number, because the mean of its divisors is an integer number (256789800).

Almost surely, 2^1020311323 is an apocalyptic number.

1020311323 is a deficient number, since it is larger than the sum of its proper divisors (6847877).

1020311323 is an equidigital number, since it uses as much as digits as its factorization.

1020311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847876.

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

The square root of 1020311323 is about 31942.3124241186. The cubic root of 1020311323 is about 1006.7251124763.

Adding to 1020311323 its reverse (3231130201), we get a palindrome (4251441524).

The spelling of 1020311323 in words is "one billion, twenty million, three hundred eleven thousand, three hundred twenty-three".