631424447 has 2 divisors, whose sum is σ = 631424448. Its totient is φ = 631424446.

The previous prime is 631424429. The next prime is 631424501. The reversal of 631424447 is 744424136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631424447 - 2⁸ = 631424191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631424407) 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, 315712223 + 315712224.

It is an arithmetic number, because the mean of its divisors is an integer number (315712224).

Almost surely, 2^631424447 is an apocalyptic number.

631424447 is a deficient number, since it is larger than the sum of its proper divisors (1).

631424447 is an equidigital number, since it uses as much as digits as its factorization.

631424447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 35.

The square root of 631424447 is about 25128.1604380424. The cubic root of 631424447 is about 857.9074993148.

The spelling of 631424447 in words is "six hundred thirty-one million, four hundred twenty-four thousand, four hundred forty-seven".