1231230442 has 8 divisors (see below), whose sum is σ = 1988910756. Its totient is φ = 568260192.

The previous prime is 1231230437. The next prime is 1231230509. The reversal of 1231230442 is 2440321321.

It can be written as a sum of positive squares in 2 ways, for example, as 1214592201 + 16638241 = 34851^2 + 4079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23677483 + ... + 23677534.

Almost surely, 2^1231230442 is an apocalyptic number.

1231230442 is a deficient number, since it is larger than the sum of its proper divisors (757680314).

1231230442 is a wasteful number, since it uses less digits than its factorization.

1231230442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47355032.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1231230442 is about 35088.8934279780. The cubic root of 1231230442 is about 1071.7984260529.

Adding to 1231230442 its reverse (2440321321), we get a palindrome (3671551763).

The spelling of 1231230442 in words is "one billion, two hundred thirty-one million, two hundred thirty thousand, four hundred forty-two".