231313212303 has 4 divisors (see below), whose sum is σ = 308417616408. Its totient is φ = 154208808200.

The previous prime is 231313212283. The next prime is 231313212331. The reversal of 231313212303 is 303212313132.

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 231313212303 - 2¹⁶ = 231313146767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313292303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38552202048 + ... + 38552202053.

It is an arithmetic number, because the mean of its divisors is an integer number (77104404102).

Almost surely, 2^231313212303 is an apocalyptic number.

231313212303 is a deficient number, since it is larger than the sum of its proper divisors (77104404105).

231313212303 is an equidigital number, since it uses as much as digits as its factorization.

231313212303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77104404104.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 231313212303 its reverse (303212313132), we get a palindrome (534525525435).

The spelling of 231313212303 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred twelve thousand, three hundred three".