1231011033112 has 32 divisors (see below), whose sum is σ = 2638427397120. Its totient is φ = 527466834720.

The previous prime is 1231011033089. The next prime is 1231011033169. The reversal of 1231011033112 is 2113301101321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231011033112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2004598 + ... + 2545669.

It is an arithmetic number, because the mean of its divisors is an integer number (82450856160).

Almost surely, 2^{1231011033112} is an apocalyptic number.

It is an amenable number.

1231011033112 is an abundant number, since it is smaller than the sum of its proper divisors (1407416364008).

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

1231011033112 is a wasteful number, since it uses less digits than its factorization.

1231011033112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555111 (or 4555107 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1231011033112 its reverse (2113301101321), we get a palindrome (3344312134433).

The spelling of 1231011033112 in words is "one trillion, two hundred thirty-one billion, eleven million, thirty-three thousand, one hundred twelve".