1123123231303 has 2 divisors, whose sum is σ = 1123123231304. Its totient is φ = 1123123231302.

The previous prime is 1123123231273. The next prime is 1123123231339. The reversal of 1123123231303 is 3031323213211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123123231303 - 2¹³ = 1123123223111 is a prime.

It is a super-2 number, since 2×1123123231303² (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 (1123121231303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561561615651 + 561561615652.

It is an arithmetic number, because the mean of its divisors is an integer number (561561615652).

Almost surely, 2^{1123123231303} is an apocalyptic number.

1123123231303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123123231303 is an equidigital number, since it uses as much as digits as its factorization.

1123123231303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1123123231303 its reverse (3031323213211), we get a palindrome (4154446444514).

The spelling of 1123123231303 in words is "one trillion, one hundred twenty-three billion, one hundred twenty-three million, two hundred thirty-one thousand, three hundred three".