1131230123111 has 8 divisors (see below), whose sum is σ = 1257353550864. Its totient is φ = 1008987416320.

The previous prime is 1131230123017. The next prime is 1131230123119. The reversal of 1131230123111 is 1113210321311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131230123111 - 2¹⁸ = 1131229860967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131230123119) 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 7 ways as a sum of consecutive naturals, for example, 970179626 + ... + 970180791.

It is an arithmetic number, because the mean of its divisors is an integer number (157169193858).

Almost surely, 2^{1131230123111} is an apocalyptic number.

1131230123111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131230123111 is a deficient number, since it is larger than the sum of its proper divisors (126123427753).

1131230123111 is a wasteful number, since it uses less digits than its factorization.

1131230123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940360481.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1131230123111 its reverse (1113210321311), we get a palindrome (2244440444422).

The spelling of 1131230123111 in words is "one trillion, one hundred thirty-one billion, two hundred thirty million, one hundred twenty-three thousand, one hundred eleven".