231243400343 has 2 divisors, whose sum is σ = 231243400344. Its totient is φ = 231243400342.

The previous prime is 231243400319. The next prime is 231243400351. The reversal of 231243400343 is 343004342132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231243400343 - 2⁶ = 231243400279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231243400393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115621700171 + 115621700172.

It is an arithmetic number, because the mean of its divisors is an integer number (115621700172).

Almost surely, 2^231243400343 is an apocalyptic number.

231243400343 is a deficient number, since it is larger than the sum of its proper divisors (1).

231243400343 is an equidigital number, since it uses as much as digits as its factorization.

231243400343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 231243400343 its reverse (343004342132), we get a palindrome (574247742475).

The spelling of 231243400343 in words is "two hundred thirty-one billion, two hundred forty-three million, four hundred thousand, three hundred forty-three".