234340043431 has 16 divisors (see below), whose sum is σ = 253936972800. Its totient is φ = 214968122208.

The previous prime is 234340043417. The next prime is 234340043453. The reversal of 234340043431 is 134340043432.

It is a cyclic number.

It is not a de Polignac number, because 234340043431 - 2³¹ = 232192559783 is a prime.

It is a super-2 number, since 2×234340043431² (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 = 234340043393 and 234340043402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234340043131) 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, 11754690 + ... + 11774608.

It is an arithmetic number, because the mean of its divisors is an integer number (15871060800).

Almost surely, 2^234340043431 is an apocalyptic number.

234340043431 is a deficient number, since it is larger than the sum of its proper divisors (19596929369).

234340043431 is a wasteful number, since it uses less digits than its factorization.

234340043431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25518.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 234340043431 its reverse (134340043432), we get a palindrome (368680086863).

Subtracting from 234340043431 its reverse (134340043432), we obtain a palindrome (99999999999).

The spelling of 234340043431 in words is "two hundred thirty-four billion, three hundred forty million, forty-three thousand, four hundred thirty-one".