231334431431343 has 16 divisors (see below), whose sum is σ = 309999146956800. Its totient is φ = 153446351392224.

The previous prime is 231334431431339. The next prime is 231334431431353. The reversal of 231334431431343 is 343134134433132.

It is not a de Polignac number, because 231334431431343 - 2² = 231334431431339 is a prime.

It is a super-2 number, since 2×231334431431343² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231334431431295 and 231334431431304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231334431431353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56191330 + ... + 60167552.

It is an arithmetic number, because the mean of its divisors is an integer number (19374946684800).

Almost surely, 2^{231334431431343} is an apocalyptic number.

231334431431343 is a deficient number, since it is larger than the sum of its proper divisors (78664715525457).

231334431431343 is a wasteful number, since it uses less digits than its factorization.

231334431431343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073878.

The product of its digits is 1119744, while the sum is 42.

Adding to 231334431431343 its reverse (343134134433132), we get a palindrome (574468565864475).

The spelling of 231334431431343 in words is "two hundred thirty-one trillion, three hundred thirty-four billion, four hundred thirty-one million, four hundred thirty-one thousand, three hundred forty-three".