231313032202331 has 4 divisors (see below), whose sum is σ = 231317254299432. Its totient is φ = 231308810105232.

The previous prime is 231313032202327. The next prime is 231313032202339. The reversal of 231313032202331 is 133202230313132.

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 231313032202331 - 2² = 231313032202327 is a prime.

It is a super-2 number, since 2×231313032202331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231313032202294 and 231313032202303.

It is not an unprimeable number, because it can be changed into a prime (231313032202339) 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, 2110966370 + ... + 2111075943.

It is an arithmetic number, because the mean of its divisors is an integer number (57829313574858).

Almost surely, 2^{231313032202331} is an apocalyptic number.

231313032202331 is a deficient number, since it is larger than the sum of its proper divisors (4222097101).

231313032202331 is an equidigital number, since it uses as much as digits as its factorization.

231313032202331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222097100.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 231313032202331 its reverse (133202230313132), we get a palindrome (364515262515463).

The spelling of 231313032202331 in words is "two hundred thirty-one trillion, three hundred thirteen billion, thirty-two million, two hundred two thousand, three hundred thirty-one".