1231131310112 has 48 divisors (see below), whose sum is σ = 2670313915584. Its totient is φ = 554064480000.

The previous prime is 1231131310103. The next prime is 1231131310139. The reversal of 1231131310112 is 2110131311321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17278964 + ... + 17350067.

It is an arithmetic number, because the mean of its divisors is an integer number (55631539908).

Almost surely, 2^{1231131310112} is an apocalyptic number.

It is an amenable number.

1231131310112 is an abundant number, since it is smaller than the sum of its proper divisors (1439182605472).

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

1231131310112 is a wasteful number, since it uses less digits than its factorization.

1231131310112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34629153 (or 34629145 counting only the distinct ones).

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

Adding to 1231131310112 its reverse (2110131311321), we get a palindrome (3341262621433).

The spelling of 1231131310112 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-one million, three hundred ten thousand, one hundred twelve".