631606099 has 2 divisors, whose sum is σ = 631606100. Its totient is φ = 631606098.

The previous prime is 631606097. The next prime is 631606103. The reversal of 631606099 is 990606136.

It is a happy number.

631606099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631606099 - 2¹ = 631606097 is a prime.

Together with 631606097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (631606093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315803049 + 315803050.

It is an arithmetic number, because the mean of its divisors is an integer number (315803050).

Almost surely, 2^631606099 is an apocalyptic number.

631606099 is a deficient number, since it is larger than the sum of its proper divisors (1).

631606099 is an equidigital number, since it uses as much as digits as its factorization.

631606099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 631606099 is about 25131.7746886287. The cubic root of 631606099 is about 857.9897607644.

The spelling of 631606099 in words is "six hundred thirty-one million, six hundred six thousand, ninety-nine".