631623059 has 2 divisors, whose sum is σ = 631623060. Its totient is φ = 631623058.

The previous prime is 631623053. The next prime is 631623067. The reversal of 631623059 is 950326136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631623059 - 2¹⁶ = 631557523 is a prime.

It is not a weakly prime, because it can be changed into another prime (631623053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315811529 + 315811530.

It is an arithmetic number, because the mean of its divisors is an integer number (315811530).

Almost surely, 2^631623059 is an apocalyptic number.

631623059 is a deficient number, since it is larger than the sum of its proper divisors (1).

631623059 is an equidigital number, since it uses as much as digits as its factorization.

631623059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 631623059 is about 25132.1121078194. The cubic root of 631623059 is about 857.9974403272.

The spelling of 631623059 in words is "six hundred thirty-one million, six hundred twenty-three thousand, fifty-nine".