1231223315 has 16 divisors (see below), whose sum is σ = 1689120000. Its totient is φ = 843974880.

The previous prime is 1231223251. The next prime is 1231223321. The reversal of 1231223315 is 5133221321.

It is not a de Polignac number, because 1231223315 - 2⁶ = 1231223251 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160436 + ... + 167934.

It is an arithmetic number, because the mean of its divisors is an integer number (105570000).

Almost surely, 2^1231223315 is an apocalyptic number.

1231223315 is a deficient number, since it is larger than the sum of its proper divisors (457896685).

1231223315 is an equidigital number, since it uses as much as digits as its factorization.

1231223315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12202.

The product of its digits is 1080, while the sum is 23.

The square root of 1231223315 is about 35088.7918714794. The cubic root of 1231223315 is about 1071.7963580073.

Adding to 1231223315 its reverse (5133221321), we get a palindrome (6364444636).

The spelling of 1231223315 in words is "one billion, two hundred thirty-one million, two hundred twenty-three thousand, three hundred fifteen".