231344432331 has 8 divisors (see below), whose sum is σ = 308461577424. Its totient is φ = 154228454400.

The previous prime is 231344432287. The next prime is 231344432339. The reversal of 231344432331 is 133234443132.

It is a happy number.

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

It is not a de Polignac number, because 231344432331 - 2¹⁴ = 231344415947 is a prime.

It is a super-2 number, since 2×231344432331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231344432292 and 231344432301.

It is not an unprimeable number, because it can be changed into a prime (231344432339) 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 7 ways as a sum of consecutive naturals, for example, 415915 + ... + 797291.

It is an arithmetic number, because the mean of its divisors is an integer number (38557697178).

Almost surely, 2^231344432331 is an apocalyptic number.

231344432331 is a deficient number, since it is larger than the sum of its proper divisors (77117145093).

231344432331 is a wasteful number, since it uses less digits than its factorization.

231344432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583581.

The product of its digits is 62208, while the sum is 33.

Adding to 231344432331 its reverse (133234443132), we get a palindrome (364578875463).

The spelling of 231344432331 in words is "two hundred thirty-one billion, three hundred forty-four million, four hundred thirty-two thousand, three hundred thirty-one".