631497023 has 2 divisors, whose sum is σ = 631497024. Its totient is φ = 631497022.

The previous prime is 631496963. The next prime is 631497049. The reversal of 631497023 is 320794136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631497023 - 2¹⁰ = 631495999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631491023) 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, 315748511 + 315748512.

It is an arithmetic number, because the mean of its divisors is an integer number (315748512).

Almost surely, 2^631497023 is an apocalyptic number.

631497023 is a deficient number, since it is larger than the sum of its proper divisors (1).

631497023 is an equidigital number, since it uses as much as digits as its factorization.

631497023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 631497023 is about 25129.6045134021. The cubic root of 631497023 is about 857.9403673850.

The spelling of 631497023 in words is "six hundred thirty-one million, four hundred ninety-seven thousand, twenty-three".