231203313231 has 8 divisors (see below), whose sum is σ = 336295728384. Its totient is φ = 140123220120.

The previous prime is 231203313223. The next prime is 231203313239. The reversal of 231203313231 is 132313302132.

It is an interprime number because it is at equal distance from previous prime (231203313223) and next prime (231203313239).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231203313231 - 2³ = 231203313223 is a prime.

It is a super-2 number, since 2×231203313231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231203313239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3503080471 + ... + 3503080536.

It is an arithmetic number, because the mean of its divisors is an integer number (42036966048).

Almost surely, 2^231203313231 is an apocalyptic number.

231203313231 is a deficient number, since it is larger than the sum of its proper divisors (105092415153).

231203313231 is a wasteful number, since it uses less digits than its factorization.

231203313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7006161021.

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

Adding to 231203313231 its reverse (132313302132), we get a palindrome (363516615363).

The spelling of 231203313231 in words is "two hundred thirty-one billion, two hundred three million, three hundred thirteen thousand, two hundred thirty-one".