91142233 has 8 divisors (see below), whose sum is σ = 112175168. Its totient is φ = 72112464.

The previous prime is 91142231. The next prime is 91142239. The reversal of 91142233 is 33224119.

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 91142233 - 2¹ = 91142231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91142198 and 91142207.

It is not an unprimeable number, because it can be changed into a prime (91142231) 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, 500691 + ... + 500872.

It is an arithmetic number, because the mean of its divisors is an integer number (14021896).

Almost surely, 2^91142233 is an apocalyptic number.

It is an amenable number.

91142233 is a deficient number, since it is larger than the sum of its proper divisors (21032935).

91142233 is a wasteful number, since it uses less digits than its factorization.

91142233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001583.

The product of its digits is 1296, while the sum is 25.

The square root of 91142233 is about 9546.8441382480. The cubic root of 91142233 is about 450.0283652902.

The spelling of 91142233 in words is "ninety-one million, one hundred forty-two thousand, two hundred thirty-three".