231213320315 has 4 divisors (see below), whose sum is σ = 277455984384. Its totient is φ = 184970656248.

The previous prime is 231213320291. The next prime is 231213320321. The reversal of 231213320315 is 513023312132.

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

It is a cyclic number.

It is not a de Polignac number, because 231213320315 - 2⁸ = 231213320059 is a prime.

It is a Duffinian number.

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, 23121332027 + ... + 23121332036.

It is an arithmetic number, because the mean of its divisors is an integer number (69363996096).

Almost surely, 2^231213320315 is an apocalyptic number.

231213320315 is a deficient number, since it is larger than the sum of its proper divisors (46242664069).

231213320315 is an equidigital number, since it uses as much as digits as its factorization.

231213320315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46242664068.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 231213320315 its reverse (513023312132), we get a palindrome (744236632447).

The spelling of 231213320315 in words is "two hundred thirty-one billion, two hundred thirteen million, three hundred twenty thousand, three hundred fifteen".