99630331 has 2 divisors, whose sum is σ = 99630332. Its totient is φ = 99630330.

The previous prime is 99630329. The next prime is 99630361. The reversal of 99630331 is 13303699.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13303699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99630331 - 2¹ = 99630329 is a prime.

It is a super-2 number, since 2×99630331² = 19852405710339122, which contains 22 as substring.

Together with 99630329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (99630361) 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, 49815165 + 49815166.

It is an arithmetic number, because the mean of its divisors is an integer number (49815166).

Almost surely, 2^99630331 is an apocalyptic number.

99630331 is a deficient number, since it is larger than the sum of its proper divisors (1).

99630331 is an equidigital number, since it uses as much as digits as its factorization.

99630331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 34.

The square root of 99630331 is about 9981.4994364574. The cubic root of 99630331 is about 463.5862266349.

The spelling of 99630331 in words is "ninety-nine million, six hundred thirty thousand, three hundred thirty-one".