99731001 has 16 divisors (see below), whose sum is σ = 135825984. Its totient is φ = 65068224.

The previous prime is 99730987. The next prime is 99731003. The reversal of 99731001 is 10013799.

It is not a de Polignac number, because 99731001 - 2⁹ = 99730489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99731001.

It is not an unprimeable number, because it can be changed into a prime (99731003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124735 + ... + 125531.

It is an arithmetic number, because the mean of its divisors is an integer number (8489124).

Almost surely, 2^99731001 is an apocalyptic number.

It is an amenable number.

99731001 is a deficient number, since it is larger than the sum of its proper divisors (36094983).

99731001 is a wasteful number, since it uses less digits than its factorization.

99731001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 99731001 is about 9986.5409927562. The cubic root of 99731001 is about 463.7423153649.

The spelling of 99731001 in words is "ninety-nine million, seven hundred thirty-one thousand, one".