91411331 has 8 divisors (see below), whose sum is σ = 99807744. Its totient is φ = 83029320.

The previous prime is 91411321. The next prime is 91411339. The reversal of 91411331 is 13311419.

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

It is a de Polignac number, because none of the positive numbers 2^k-91411331 is a prime.

It is a super-2 number, since 2×91411331² = 16712062870383122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91411297 and 91411306.

It is not an unprimeable number, because it can be changed into a prime (91411339) 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, 13046 + ... + 18788.

It is an arithmetic number, because the mean of its divisors is an integer number (12475968).

Almost surely, 2^91411331 is an apocalyptic number.

91411331 is a deficient number, since it is larger than the sum of its proper divisors (8396413).

91411331 is a wasteful number, since it uses less digits than its factorization.

91411331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7201.

The product of its digits is 324, while the sum is 23.

The square root of 91411331 is about 9560.9273085826. The cubic root of 91411331 is about 450.4708339447.

The spelling of 91411331 in words is "ninety-one million, four hundred eleven thousand, three hundred thirty-one".