231004447 has 2 divisors, whose sum is σ = 231004448. Its totient is φ = 231004446.

The previous prime is 231004439. The next prime is 231004511. The reversal of 231004447 is 744400132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231004447 - 2³ = 231004439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231004247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115502223 + 115502224.

It is an arithmetic number, because the mean of its divisors is an integer number (115502224).

Almost surely, 2^231004447 is an apocalyptic number.

231004447 is a deficient number, since it is larger than the sum of its proper divisors (1).

231004447 is an equidigital number, since it uses as much as digits as its factorization.

231004447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 231004447 is about 15198.8304484260. The cubic root of 231004447 is about 613.5831812958.

Adding to 231004447 its reverse (744400132), we get a palindrome (975404579).

The spelling of 231004447 in words is "two hundred thirty-one million, four thousand, four hundred forty-seven".