1231043012 has 12 divisors (see below), whose sum is σ = 2157033900. Its totient is φ = 614747616.

The previous prime is 1231042991. The next prime is 1231043027. The reversal of 1231043012 is 2103401321.

It can be written as a sum of positive squares in 2 ways, for example, as 942858436 + 288184576 = 30706^2 + 16976^2 .

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, 189887 + ... + 196262.

It is an arithmetic number, because the mean of its divisors is an integer number (179752825).

Almost surely, 2^1231043012 is an apocalyptic number.

It is an amenable number.

1231043012 is a deficient number, since it is larger than the sum of its proper divisors (925990888).

1231043012 is a wasteful number, since it uses less digits than its factorization.

1231043012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386950 (or 386948 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1231043012 is about 35086.2225381987. Note that the first 3 decimals coincide. The cubic root of 1231043012 is about 1071.7440367291.

Adding to 1231043012 its reverse (2103401321), we get a palindrome (3334444333).

The spelling of 1231043012 in words is "one billion, two hundred thirty-one million, forty-three thousand, twelve".