1231230412 has 6 divisors (see below), whose sum is σ = 2154653228. Its totient is φ = 615615204.

The previous prime is 1231230401. The next prime is 1231230421. The reversal of 1231230412 is 2140321321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231230412.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153903798 + ... + 153903805.

Almost surely, 2^1231230412 is an apocalyptic number.

It is an amenable number.

1231230412 is a deficient number, since it is larger than the sum of its proper divisors (923422816).

1231230412 is a wasteful number, since it uses less digits than its factorization.

1231230412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307807607 (or 307807605 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1231230412 is about 35088.8930004923. The cubic root of 1231230412 is about 1071.7984173478.

Adding to 1231230412 its reverse (2140321321), we get a palindrome (3371551733).

Subtracting 1231230412 from its reverse (2140321321), we obtain a palindrome (909090909).

It can be divided in two parts, 12312 and 30412, that added together give a palindrome (42724).

The spelling of 1231230412 in words is "one billion, two hundred thirty-one million, two hundred thirty thousand, four hundred twelve".