1231112302 has 16 divisors (see below), whose sum is σ = 2150299872. Its totient is φ = 517664160.

The previous prime is 1231112293. The next prime is 1231112327. The reversal of 1231112302 is 2032111321.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 828849 + ... + 830332.

It is an arithmetic number, because the mean of its divisors is an integer number (134393742).

Almost surely, 2^1231112302 is an apocalyptic number.

1231112302 is a deficient number, since it is larger than the sum of its proper divisors (919187570).

1231112302 is a wasteful number, since it uses less digits than its factorization.

1231112302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659243.

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

The square root of 1231112302 is about 35087.2099489258. The cubic root of 1231112302 is about 1071.7641442721.

Adding to 1231112302 its reverse (2032111321), we get a palindrome (3263223623).

The spelling of 1231112302 in words is "one billion, two hundred thirty-one million, one hundred twelve thousand, three hundred two".