631355423 has 2 divisors, whose sum is σ = 631355424. Its totient is φ = 631355422.

The previous prime is 631355399. The next prime is 631355437. The reversal of 631355423 is 324553136.

631355423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631355423 - 2¹⁶ = 631289887 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631355423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631355453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315677711 + 315677712.

It is an arithmetic number, because the mean of its divisors is an integer number (315677712).

Almost surely, 2^631355423 is an apocalyptic number.

631355423 is a deficient number, since it is larger than the sum of its proper divisors (1).

631355423 is an equidigital number, since it uses as much as digits as its factorization.

631355423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 32.

The square root of 631355423 is about 25126.7869613287. The cubic root of 631355423 is about 857.8762375302.

The spelling of 631355423 in words is "six hundred thirty-one million, three hundred fifty-five thousand, four hundred twenty-three".