1000320311231 has 2 divisors, whose sum is σ = 1000320311232. Its totient is φ = 1000320311230.

The previous prime is 1000320311213. The next prime is 1000320311239. The reversal of 1000320311231 is 1321130230001.

Together with previous prime (1000320311213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000320311231 - 2¹⁰ = 1000320310207 is a prime.

It is a super-2 number, since 2×1000320311231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000320311239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500160155615 + 500160155616.

It is an arithmetic number, because the mean of its divisors is an integer number (500160155616).

Almost surely, 2^{1000320311231} is an apocalyptic number.

1000320311231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000320311231 is an equidigital number, since it uses as much as digits as its factorization.

1000320311231 is an evil number, because the sum of its binary digits is even.

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

Adding to 1000320311231 its reverse (1321130230001), we get a palindrome (2321450541232).

The spelling of 1000320311231 in words is "one trillion, three hundred twenty million, three hundred eleven thousand, two hundred thirty-one".