231313222303 has 4 divisors (see below), whose sum is σ = 231314602120. Its totient is φ = 231311842488.

The previous prime is 231313222291. The next prime is 231313222333. The reversal of 231313222303 is 303222313132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231313222303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313222333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396993 + ... + 787546.

It is an arithmetic number, because the mean of its divisors is an integer number (57828650530).

Almost surely, 2^231313222303 is an apocalyptic number.

231313222303 is a deficient number, since it is larger than the sum of its proper divisors (1379817).

231313222303 is a wasteful number, since it uses less digits than its factorization.

231313222303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379816.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 231313222303 its reverse (303222313132), we get a palindrome (534535535435).

The spelling of 231313222303 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred twenty-two thousand, three hundred three".