1000311321023 has 4 divisors (see below), whose sum is σ = 1143212938320. Its totient is φ = 857409703728.

The previous prime is 1000311321017. The next prime is 1000311321071. The reversal of 1000311321023 is 3201231130001.

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-1000311321023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000311320992 and 1000311321010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000311321013) 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, 71450808638 + ... + 71450808651.

It is an arithmetic number, because the mean of its divisors is an integer number (285803234580).

Almost surely, 2^{1000311321023} is an apocalyptic number.

1000311321023 is a deficient number, since it is larger than the sum of its proper divisors (142901617297).

1000311321023 is an equidigital number, since it uses as much as digits as its factorization.

1000311321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142901617296.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1000311321023 its reverse (3201231130001), we get a palindrome (4201542451024).

The spelling of 1000311321023 in words is "one trillion, three hundred eleven million, three hundred twenty-one thousand, twenty-three".