1231412506 has 4 divisors (see below), whose sum is σ = 1847118762. Its totient is φ = 615706252.

The previous prime is 1231412453. The next prime is 1231412509. The reversal of 1231412506 is 6052141321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1231378281 + 34225 = 35091^2 + 185^2 .

It is not an unprimeable number, because it can be changed into a prime (1231412509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307853125 + ... + 307853128.

Almost surely, 2^1231412506 is an apocalyptic number.

1231412506 is a deficient number, since it is larger than the sum of its proper divisors (615706256).

1231412506 is an equidigital number, since it uses as much as digits as its factorization.

1231412506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615706255.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1231412506 is about 35091.4876572653. The cubic root of 1231412506 is about 1071.8512529607.

Adding to 1231412506 its reverse (6052141321), we get a palindrome (7283553827).

The spelling of 1231412506 in words is "one billion, two hundred thirty-one million, four hundred twelve thousand, five hundred six".