91342471 has 4 divisors (see below), whose sum is σ = 99646344. Its totient is φ = 83038600.

The previous prime is 91342469. The next prime is 91342541. The reversal of 91342471 is 17424319.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91342471 - 2¹ = 91342469 is a prime.

It is a super-3 number, since 3×91342471³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91342441) 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, 4151920 + ... + 4151941.

It is an arithmetic number, because the mean of its divisors is an integer number (24911586).

Almost surely, 2^91342471 is an apocalyptic number.

91342471 is a deficient number, since it is larger than the sum of its proper divisors (8303873).

91342471 is a wasteful number, since it uses less digits than its factorization.

91342471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8303872.

The product of its digits is 6048, while the sum is 31.

The square root of 91342471 is about 9557.3255150173. The cubic root of 91342471 is about 450.3576925595.

The spelling of 91342471 in words is "ninety-one million, three hundred forty-two thousand, four hundred seventy-one".