91716313 has 8 divisors (see below), whose sum is σ = 99791048. Its totient is φ = 83787264.

The previous prime is 91716307. The next prime is 91716329. The reversal of 91716313 is 31361719.

It can be written as a sum of positive squares in 4 ways, for example, as 15468489 + 76247824 = 3933^2 + 8732^2 .

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 91716313 - 2⁵ = 91716281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91716413) 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, 35106 + ... + 37627.

It is an arithmetic number, because the mean of its divisors is an integer number (12473881).

Almost surely, 2^91716313 is an apocalyptic number.

It is an amenable number.

91716313 is a deficient number, since it is larger than the sum of its proper divisors (8074735).

91716313 is a wasteful number, since it uses less digits than its factorization.

91716313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72843.

The product of its digits is 3402, while the sum is 31.

The square root of 91716313 is about 9576.8634218099. The cubic root of 91716313 is about 450.9712569132.

It can be divided in two parts, 91716 and 313, that added together give a palindrome (92029).

The spelling of 91716313 in words is "ninety-one million, seven hundred sixteen thousand, three hundred thirteen".