231312401303 has 4 divisors (see below), whose sum is σ = 231864459960. Its totient is φ = 230760342648.

The previous prime is 231312401293. The next prime is 231312401311. The reversal of 231312401303 is 303104213132.

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 231312401303 - 2¹⁰ = 231312400279 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 (231312401323) 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, 276028700 + ... + 276029537.

It is an arithmetic number, because the mean of its divisors is an integer number (57966114990).

Almost surely, 2^231312401303 is an apocalyptic number.

231312401303 is a deficient number, since it is larger than the sum of its proper divisors (552058657).

231312401303 is an equidigital number, since it uses as much as digits as its factorization.

231312401303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552058656.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231312401303 its reverse (303104213132), we get a palindrome (534416614435).

The spelling of 231312401303 in words is "two hundred thirty-one billion, three hundred twelve million, four hundred one thousand, three hundred three".