1111331020423 has 16 divisors (see below), whose sum is σ = 1205059355136. Its totient is φ = 1018790989920.

The previous prime is 1111331020357. The next prime is 1111331020447. The reversal of 1111331020423 is 3240201331111.

It is a cyclic number.

It is not a de Polignac number, because 1111331020423 - 2¹⁷ = 1111330889351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111331020394 and 1111331020403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111331020493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2210118 + ... + 2665948.

It is an arithmetic number, because the mean of its divisors is an integer number (75316209696).

Almost surely, 2^{1111331020423} is an apocalyptic number.

1111331020423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1111331020423 is a deficient number, since it is larger than the sum of its proper divisors (93728334713).

1111331020423 is a wasteful number, since it uses less digits than its factorization.

1111331020423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457134.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1111331020423 its reverse (3240201331111), we get a palindrome (4351532351534).

The spelling of 1111331020423 in words is "one trillion, one hundred eleven billion, three hundred thirty-one million, twenty thousand, four hundred twenty-three".