1231123102 has 48 divisors (see below), whose sum is σ = 2166848496. Its totient is φ = 518470400.

The previous prime is 1231123081. The next prime is 1231123133. The reversal of 1231123102 is 2013211321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1885008 + ... + 1885660.

It is an arithmetic number, because the mean of its divisors is an integer number (45142677).

Almost surely, 2^1231123102 is an apocalyptic number.

1231123102 is a deficient number, since it is larger than the sum of its proper divisors (935725394).

1231123102 is a wasteful number, since it uses less digits than its factorization.

1231123102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1231123102 is about 35087.3638508224. The cubic root of 1231123102 is about 1071.7672782995.

Adding to 1231123102 its reverse (2013211321), we get a palindrome (3244334423).

The spelling of 1231123102 in words is "one billion, two hundred thirty-one million, one hundred twenty-three thousand, one hundred two".