1020323231111 has 2 divisors, whose sum is σ = 1020323231112. Its totient is φ = 1020323231110.

The previous prime is 1020323231089. The next prime is 1020323231113. The reversal of 1020323231111 is 1111323230201.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1111323230201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020323231111 - 2²⁶ = 1020256122247 is a prime.

It is a super-2 number, since 2×1020323231111² (a number of 25 digits) contains 22 as substring.

Together with 1020323231113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020323231113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510161615555 + 510161615556.

It is an arithmetic number, because the mean of its divisors is an integer number (510161615556).

Almost surely, 2^{1020323231111} is an apocalyptic number.

1020323231111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020323231111 is an equidigital number, since it uses as much as digits as its factorization.

1020323231111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1020323231111 its reverse (1111323230201), we get a palindrome (2131646461312).

The spelling of 1020323231111 in words is "one trillion, twenty billion, three hundred twenty-three million, two hundred thirty-one thousand, one hundred eleven".