1020243031123 has 2 divisors, whose sum is σ = 1020243031124. Its totient is φ = 1020243031122.

The previous prime is 1020243031097. The next prime is 1020243031127. The reversal of 1020243031123 is 3211303420201.

It is a strong prime.

It is an emirp because it is prime and its reverse (3211303420201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020243031123 - 2¹⁷ = 1020242900051 is a prime.

It is a super-2 number, since 2×1020243031123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020243031094 and 1020243031103.

It is not a weakly prime, because it can be changed into another prime (1020243031127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510121515561 + 510121515562.

It is an arithmetic number, because the mean of its divisors is an integer number (510121515562).

Almost surely, 2^{1020243031123} is an apocalyptic number.

1020243031123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020243031123 is an equidigital number, since it uses as much as digits as its factorization.

1020243031123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1020243031123 its reverse (3211303420201), we get a palindrome (4231546451324).

The spelling of 1020243031123 in words is "one trillion, twenty billion, two hundred forty-three million, thirty-one thousand, one hundred twenty-three".