231224783 has 2 divisors, whose sum is σ = 231224784. Its totient is φ = 231224782.

The previous prime is 231224779. The next prime is 231224809. The reversal of 231224783 is 387422132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231224783 - 2² = 231224779 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231224723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115612391 + 115612392.

It is an arithmetic number, because the mean of its divisors is an integer number (115612392).

Almost surely, 2^231224783 is an apocalyptic number.

231224783 is a deficient number, since it is larger than the sum of its proper divisors (1).

231224783 is an equidigital number, since it uses as much as digits as its factorization.

231224783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 32.

The square root of 231224783 is about 15206.0771732883. The cubic root of 231224783 is about 613.7782013553.

The spelling of 231224783 in words is "two hundred thirty-one million, two hundred twenty-four thousand, seven hundred eighty-three".