123031112 has 8 divisors (see below), whose sum is σ = 230683350. Its totient is φ = 61515552.

The previous prime is 123031109. The next prime is 123031121. The reversal of 123031112 is 211130321.

It can be written as a sum of positive squares in only one way, i.e., 113507716 + 9523396 = 10654^2 + 3086^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7689437 + ... + 7689452.

Almost surely, 2^123031112 is an apocalyptic number.

It is an amenable number.

123031112 is a deficient number, since it is larger than the sum of its proper divisors (107652238).

123031112 is a wasteful number, since it uses less digits than its factorization.

123031112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15378895 (or 15378891 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 123031112 is about 11091.9390550075. The cubic root of 123031112 is about 497.3609109253.

Adding to 123031112 its reverse (211130321), we get a palindrome (334161433).

The spelling of 123031112 in words is "one hundred twenty-three million, thirty-one thousand, one hundred twelve".