231342563 has 2 divisors, whose sum is σ = 231342564. Its totient is φ = 231342562.

The previous prime is 231342557. The next prime is 231342569. The reversal of 231342563 is 365243132.

It is a balanced prime because it is at equal distance from previous prime (231342557) and next prime (231342569).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231342563 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (231342569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115671281 + 115671282.

It is an arithmetic number, because the mean of its divisors is an integer number (115671282).

Almost surely, 2^231342563 is an apocalyptic number.

231342563 is a deficient number, since it is larger than the sum of its proper divisors (1).

231342563 is an equidigital number, since it uses as much as digits as its factorization.

231342563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 29.

The square root of 231342563 is about 15209.9494739463. The cubic root of 231342563 is about 613.8823979798.

Adding to 231342563 its reverse (365243132), we get a palindrome (596585695).

The spelling of 231342563 in words is "two hundred thirty-one million, three hundred forty-two thousand, five hundred sixty-three".