99731903 has 2 divisors, whose sum is σ = 99731904. Its totient is φ = 99731902.

The previous prime is 99731897. The next prime is 99731939. The reversal of 99731903 is 30913799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99731903 - 2¹⁰ = 99730879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99731993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49865951 + 49865952.

It is an arithmetic number, because the mean of its divisors is an integer number (49865952).

Almost surely, 2^99731903 is an apocalyptic number.

99731903 is a deficient number, since it is larger than the sum of its proper divisors (1).

99731903 is an equidigital number, since it uses as much as digits as its factorization.

99731903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 99731903 is about 9986.5861534360. The cubic root of 99731903 is about 463.7437134401.

The spelling of 99731903 in words is "ninety-nine million, seven hundred thirty-one thousand, nine hundred three".