99931003 has 2 divisors, whose sum is σ = 99931004. Its totient is φ = 99931002.

The previous prime is 99931001. The next prime is 99931031. The reversal of 99931003 is 30013999.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (30013999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99931003 - 2¹ = 99931001 is a prime.

Together with 99931001, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 99931003.

It is not a weakly prime, because it can be changed into another prime (99931001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49965501 + 49965502.

It is an arithmetic number, because the mean of its divisors is an integer number (49965502).

Almost surely, 2^99931003 is an apocalyptic number.

99931003 is a deficient number, since it is larger than the sum of its proper divisors (1).

99931003 is an equidigital number, since it uses as much as digits as its factorization.

99931003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 99931003 is about 9996.5495547214. The cubic root of 99931003 is about 464.0521068984.

The spelling of 99931003 in words is "ninety-nine million, nine hundred thirty-one thousand, three".