1131312233123 has 16 divisors (see below), whose sum is σ = 1215913163040. Its totient is φ = 1048756709376.

The previous prime is 1131312233113. The next prime is 1131312233141. The reversal of 1131312233123 is 3213322131311.

It is a cyclic number.

It is not a de Polignac number, because 1131312233123 - 2⁶ = 1131312233059 is a prime.

It is a super-3 number, since 3×1131312233123³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131312233092 and 1131312233101.

It is not an unprimeable number, because it can be changed into a prime (1131312233113) 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 in 15 ways as a sum of consecutive naturals, for example, 300311 + ... + 1533887.

It is an arithmetic number, because the mean of its divisors is an integer number (75994572690).

Almost surely, 2^{1131312233123} is an apocalyptic number.

1131312233123 is a deficient number, since it is larger than the sum of its proper divisors (84600929917).

1131312233123 is a wasteful number, since it uses less digits than its factorization.

1131312233123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234406.

The product of its digits is 1944, while the sum is 26.

Adding to 1131312233123 its reverse (3213322131311), we get a palindrome (4344634364434).

The spelling of 1131312233123 in words is "one trillion, one hundred thirty-one billion, three hundred twelve million, two hundred thirty-three thousand, one hundred twenty-three".