631224147413 has 2 divisors, whose sum is σ = 631224147414. Its totient is φ = 631224147412.

The previous prime is 631224147403. The next prime is 631224147457. The reversal of 631224147413 is 314741422136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499733058724 + 131491088689 = 706918^2 + 362617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631224147413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631224147403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315612073706 + 315612073707.

It is an arithmetic number, because the mean of its divisors is an integer number (315612073707).

Almost surely, 2^631224147413 is an apocalyptic number.

It is an amenable number.

631224147413 is a deficient number, since it is larger than the sum of its proper divisors (1).

631224147413 is an equidigital number, since it uses as much as digits as its factorization.

631224147413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 38.

Adding to 631224147413 its reverse (314741422136), we get a palindrome (945965569549).

The spelling of 631224147413 in words is "six hundred thirty-one billion, two hundred twenty-four million, one hundred forty-seven thousand, four hundred thirteen".