1231230234 has 48 divisors (see below), whose sum is σ = 2686217472. Its totient is φ = 376032384.

The previous prime is 1231230211. The next prime is 1231230263. The reversal of 1231230234 is 4320321321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231230234.

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 23 ways as a sum of consecutive naturals, for example, 134487 + ... + 143349.

It is an arithmetic number, because the mean of its divisors is an integer number (55962864).

Almost surely, 2^1231230234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231230234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343108736).

1231230234 is an abundant number, since it is smaller than the sum of its proper divisors (1454987238).

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

1231230234 is a wasteful number, since it uses less digits than its factorization.

1231230234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9031 (or 9018 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1231230234 is about 35088.8904640771. The cubic root of 1231230234 is about 1071.7983656975.

Adding to 1231230234 its reverse (4320321321), we get a palindrome (5551551555).

The spelling of 1231230234 in words is "one billion, two hundred thirty-one million, two hundred thirty thousand, two hundred thirty-four".