1231000321112 has 8 divisors (see below), whose sum is σ = 2308125602100. Its totient is φ = 615500160552.

The previous prime is 1231000321079. The next prime is 1231000321121. The reversal of 1231000321112 is 2111230001321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1231000321112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76937520062 + ... + 76937520077.

Almost surely, 2^{1231000321112} is an apocalyptic number.

It is an amenable number.

1231000321112 is a deficient number, since it is larger than the sum of its proper divisors (1077125280988).

1231000321112 is a wasteful number, since it uses less digits than its factorization.

1231000321112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153875040145 (or 153875040141 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1231000321112 its reverse (2111230001321), we get a palindrome (3342230322433).

The spelling of 1231000321112 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-one thousand, one hundred twelve".