231330334331 has 4 divisors (see below), whose sum is σ = 236710109592. Its totient is φ = 225950559072.

The previous prime is 231330334327. The next prime is 231330334351. The reversal of 231330334331 is 133433033132.

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 231330334331 - 2² = 231330334327 is a prime.

It is a super-2 number, since 2×231330334331² (a number of 24 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 = 231330334294 and 231330334303.

It is not an unprimeable number, because it can be changed into a prime (231330334321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2689887566 + ... + 2689887651.

It is an arithmetic number, because the mean of its divisors is an integer number (59177527398).

Almost surely, 2^231330334331 is an apocalyptic number.

231330334331 is a deficient number, since it is larger than the sum of its proper divisors (5379775261).

231330334331 is an equidigital number, since it uses as much as digits as its factorization.

231330334331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5379775260.

The product of its (nonzero) digits is 17496, while the sum is 29.

Adding to 231330334331 its reverse (133433033132), we get a palindrome (364763367463).

The spelling of 231330334331 in words is "two hundred thirty-one billion, three hundred thirty million, three hundred thirty-four thousand, three hundred thirty-one".