99997313 has 4 divisors (see below), whose sum is σ = 107689428. Its totient is φ = 92305200.

The previous prime is 99997267. The next prime is 99997357. The reversal of 99997313 is 31379999.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11505664 + 88491649 = 3392^2 + 9407^2 .

It is not a de Polignac number, because 99997313 - 2¹⁸ = 99735169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99997393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3846038 + ... + 3846063.

It is an arithmetic number, because the mean of its divisors is an integer number (26922357).

Almost surely, 2^99997313 is an apocalyptic number.

It is an amenable number.

99997313 is a deficient number, since it is larger than the sum of its proper divisors (7692115).

99997313 is a wasteful number, since it uses less digits than its factorization.

99997313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7692114.

The product of its digits is 413343, while the sum is 50.

The square root of 99997313 is about 9999.8656490975. The cubic root of 99997313 is about 464.1547260076.

The spelling of 99997313 in words is "ninety-nine million, nine hundred ninety-seven thousand, three hundred thirteen".