231430417 has 2 divisors, whose sum is σ = 231430418. Its totient is φ = 231430416.

The previous prime is 231430399. The next prime is 231430447. The reversal of 231430417 is 714034132.

231430417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223084096 + 8346321 = 14936^2 + 2889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231430417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231430391 and 231430400.

It is not a weakly prime, because it can be changed into another prime (231430447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115715208 + 115715209.

It is an arithmetic number, because the mean of its divisors is an integer number (115715209).

Almost surely, 2^231430417 is an apocalyptic number.

It is an amenable number.

231430417 is a deficient number, since it is larger than the sum of its proper divisors (1).

231430417 is an equidigital number, since it uses as much as digits as its factorization.

231430417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 231430417 is about 15212.8372435913. The cubic root of 231430417 is about 613.9600968950.

Adding to 231430417 its reverse (714034132), we get a palindrome (945464549).

The spelling of 231430417 in words is "two hundred thirty-one million, four hundred thirty thousand, four hundred seventeen".