231434407 has 2 divisors, whose sum is σ = 231434408. Its totient is φ = 231434406.

The previous prime is 231434387. The next prime is 231434429. The reversal of 231434407 is 704434132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231434407 - 2⁷ = 231434279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231434807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115717203 + 115717204.

It is an arithmetic number, because the mean of its divisors is an integer number (115717204).

Almost surely, 2^231434407 is an apocalyptic number.

231434407 is a deficient number, since it is larger than the sum of its proper divisors (1).

231434407 is an equidigital number, since it uses as much as digits as its factorization.

231434407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 231434407 is about 15212.9683822718. The cubic root of 231434407 is about 613.9636252222.

Adding to 231434407 its reverse (704434132), we get a palindrome (935868539).

The spelling of 231434407 in words is "two hundred thirty-one million, four hundred thirty-four thousand, four hundred seven".