1231011010112 has 56 divisors (see below), whose sum is σ = 2630957969976. Its totient is φ = 568101961728.

The previous prime is 1231011010091. The next prime is 1231011010127. The reversal of 1231011010112 is 2110101101321.

It can be written as a sum of positive squares in 4 ways, for example, as 244850790976 + 986160219136 = 494824^2 + 993056^2 .

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, 8877698 + ... + 9015294.

It is an arithmetic number, because the mean of its divisors is an integer number (46981392321).

Almost surely, 2^{1231011010112} is an apocalyptic number.

It is an amenable number.

1231011010112 is an abundant number, since it is smaller than the sum of its proper divisors (1399946959864).

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

1231011010112 is a wasteful number, since it uses less digits than its factorization.

1231011010112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148375 (or 148365 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1231011010112 its reverse (2110101101321), we get a palindrome (3341112111433).

The spelling of 1231011010112 in words is "one trillion, two hundred thirty-one billion, eleven million, ten thousand, one hundred twelve".