99831265 has 4 divisors (see below), whose sum is σ = 119797524. Its totient is φ = 79865008.

The previous prime is 99831257. The next prime is 99831283. The reversal of 99831265 is 56213899.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56213899 = 7 ⋅8030557.

It can be written as a sum of positive squares in 2 ways, for example, as 53100369 + 46730896 = 7287^2 + 6836^2 .

It is a cyclic number.

It is not a de Polignac number, because 99831265 - 2³ = 99831257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9983122 + ... + 9983131.

It is an arithmetic number, because the mean of its divisors is an integer number (29949381).

Almost surely, 2^99831265 is an apocalyptic number.

It is an amenable number.

99831265 is a deficient number, since it is larger than the sum of its proper divisors (19966259).

99831265 is a wasteful number, since it uses less digits than its factorization.

99831265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19966258.

The product of its digits is 116640, while the sum is 43.

The square root of 99831265 is about 9991.5596880567. The cubic root of 99831265 is about 463.8976702229.

The spelling of 99831265 in words is "ninety-nine million, eight hundred thirty-one thousand, two hundred sixty-five".