91130313 has 4 divisors (see below), whose sum is σ = 121507088. Its totient is φ = 60753540.

The previous prime is 91130311. The next prime is 91130317. The reversal of 91130313 is 31303119.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91130313 - 2¹ = 91130311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91130313.

It is not an unprimeable number, because it can be changed into a prime (91130311) 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, 15188383 + ... + 15188388.

It is an arithmetic number, because the mean of its divisors is an integer number (30376772).

Almost surely, 2^91130313 is an apocalyptic number.

It is an amenable number.

91130313 is a deficient number, since it is larger than the sum of its proper divisors (30376775).

91130313 is a wasteful number, since it uses less digits than its factorization.

91130313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30376774.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 91130313 is about 9546.2198277643. The cubic root of 91130313 is about 450.0087455090.

The spelling of 91130313 in words is "ninety-one million, one hundred thirty thousand, three hundred thirteen".