99312013 has 4 divisors (see below), whose sum is σ = 99332860. Its totient is φ = 99291168.

The previous prime is 99312001. The next prime is 99312019. The reversal of 99312013 is 31021399.

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 81486729 + 17825284 = 9027^2 + 4222^2 .

It is a cyclic number.

It is not a de Polignac number, because 99312013 - 2⁵ = 99311981 is a prime.

It is a super-2 number, since 2×99312013² = 19725751852224338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99312019) 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, 631 + ... + 14107.

It is an arithmetic number, because the mean of its divisors is an integer number (24833215).

Almost surely, 2^99312013 is an apocalyptic number.

It is an amenable number.

99312013 is a deficient number, since it is larger than the sum of its proper divisors (20847).

99312013 is a wasteful number, since it uses less digits than its factorization.

99312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20846.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 99312013 is about 9965.5412798302. The cubic root of 99312013 is about 463.0919819678.

The spelling of 99312013 in words is "ninety-nine million, three hundred twelve thousand, thirteen".