91008313 has 8 divisors (see below), whose sum is σ = 99638496. Its totient is φ = 82437600.

The previous prime is 91008301. The next prime is 91008317. The reversal of 91008313 is 31380019.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91008313 - 2²¹ = 88911161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91008317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11631 + ... + 17812.

It is an arithmetic number, because the mean of its divisors is an integer number (12454812).

Almost surely, 2^91008313 is an apocalyptic number.

It is an amenable number.

91008313 is a deficient number, since it is larger than the sum of its proper divisors (8630183).

91008313 is a wasteful number, since it uses less digits than its factorization.

91008313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29735.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 91008313 is about 9539.8277238114. The cubic root of 91008313 is about 449.8078405893.

The spelling of 91008313 in words is "ninety-one million, eight thousand, three hundred thirteen".