91311151 has 8 divisors (see below), whose sum is σ = 95665664. Its totient is φ = 87044760.

The previous prime is 91311149. The next prime is 91311163. The reversal of 91311151 is 15111319.

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 91311151 - 2¹ = 91311149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91311851) 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, 19905 + ... + 24058.

It is an arithmetic number, because the mean of its divisors is an integer number (11958208).

Almost surely, 2^91311151 is an apocalyptic number.

91311151 is a deficient number, since it is larger than the sum of its proper divisors (4354513).

91311151 is a wasteful number, since it uses less digits than its factorization.

91311151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44061.

The product of its digits is 135, while the sum is 22.

The square root of 91311151 is about 9555.6868408294. The cubic root of 91311151 is about 450.3062129822.

The spelling of 91311151 in words is "ninety-one million, three hundred eleven thousand, one hundred fifty-one".