231313310331 has 8 divisors (see below), whose sum is σ = 308422524240. Its totient is φ = 154206484992.

The previous prime is 231313310329. The next prime is 231313310369. The reversal of 231313310331 is 133013313132.

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

It is not a de Polignac number, because 231313310331 - 2¹ = 231313310329 is a prime.

It is a super-2 number, since 2×231313310331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231313311331) 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, 357430 + ... + 768363.

It is an arithmetic number, because the mean of its divisors is an integer number (38552815530).

Almost surely, 2^231313310331 is an apocalyptic number.

231313310331 is a deficient number, since it is larger than the sum of its proper divisors (77109213909).

231313310331 is a wasteful number, since it uses less digits than its factorization.

231313310331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194285.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 231313310331 its reverse (133013313132), we get a palindrome (364326623463).

The spelling of 231313310331 in words is "two hundred thirty-one billion, three hundred thirteen million, three hundred ten thousand, three hundred thirty-one".