632143013 has 2 divisors, whose sum is σ = 632143014. Its totient is φ = 632143012.

The previous prime is 632143009. The next prime is 632143019. The reversal of 632143013 is 310341236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570158884 + 61984129 = 23878^2 + 7873^2 .

It is a cyclic number.

It is not a de Polignac number, because 632143013 - 2² = 632143009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 632143013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (632143019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316071506 + 316071507.

It is an arithmetic number, because the mean of its divisors is an integer number (316071507).

Almost surely, 2^632143013 is an apocalyptic number.

It is an amenable number.

632143013 is a deficient number, since it is larger than the sum of its proper divisors (1).

632143013 is an equidigital number, since it uses as much as digits as its factorization.

632143013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 632143013 is about 25142.4543949074. The cubic root of 632143013 is about 858.2328111100.

Adding to 632143013 its reverse (310341236), we get a palindrome (942484249).

The spelling of 632143013 in words is "six hundred thirty-two million, one hundred forty-three thousand, thirteen".