1231334312 has 32 divisors (see below), whose sum is σ = 2500123080. Its totient is φ = 565159680.

The previous prime is 1231334309. The next prime is 1231334317. The reversal of 1231334312 is 2134331321.

It can be written as a sum of positive squares in 4 ways, for example, as 299497636 + 931836676 = 17306^2 + 30526^2 .

It is not an unprimeable number, because it can be changed into a prime (1231334317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13883 + ... + 51530.

Almost surely, 2^1231334312 is an apocalyptic number.

It is an amenable number.

1231334312 is an abundant number, since it is smaller than the sum of its proper divisors (1268788768).

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

1231334312 is a wasteful number, since it uses less digits than its factorization.

1231334312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65613 (or 65609 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

The square root of 1231334312 is about 35090.3734947350. The cubic root of 1231334312 is about 1071.8285651637.

Adding to 1231334312 its reverse (2134331321), we get a palindrome (3365665633).

The spelling of 1231334312 in words is "one billion, two hundred thirty-one million, three hundred thirty-four thousand, three hundred twelve".