1231110111110 has 256 divisors, whose sum is σ = 2720438949888. Its totient is φ = 395609702400.

The previous prime is 1231110111107. The next prime is 1231110111137. The reversal of 1231110111110 is 111110111321.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 756674117 + ... + 756675743.

It is an arithmetic number, because the mean of its divisors is an integer number (10626714648).

Almost surely, 2^{1231110111110} is an apocalyptic number.

1231110111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231110111110 is an abundant number, since it is smaller than the sum of its proper divisors (1489328838778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231110111110 is a wasteful number, since it uses less digits than its factorization.

1231110111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 1231110111110 its reverse (111110111321), we get a palindrome (1342220222431).

The spelling of 1231110111110 in words is "one trillion, two hundred thirty-one billion, one hundred ten million, one hundred eleven thousand, one hundred ten".