91481223 has 8 divisors (see below), whose sum is σ = 124570368. Its totient is φ = 59689784.

The previous prime is 91481213. The next prime is 91481237. The reversal of 91481223 is 32218419.

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 91481223 - 2⁴ = 91481207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91481213) 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, 324261 + ... + 324542.

It is an arithmetic number, because the mean of its divisors is an integer number (15571296).

Almost surely, 2^91481223 is an apocalyptic number.

91481223 is a deficient number, since it is larger than the sum of its proper divisors (33089145).

91481223 is a wasteful number, since it uses less digits than its factorization.

91481223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648853.

The product of its digits is 3456, while the sum is 30.

The square root of 91481223 is about 9564.5816949828. The cubic root of 91481223 is about 450.5856128837.

The spelling of 91481223 in words is "ninety-one million, four hundred eighty-one thousand, two hundred twenty-three".