91831343 has 2 divisors, whose sum is σ = 91831344. Its totient is φ = 91831342.

The previous prime is 91831319. The next prime is 91831367. The reversal of 91831343 is 34313819.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (91831319) and next prime (91831367).

It is an emirp because it is prime and its reverse (34313819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91831343 - 2²⁰ = 90782767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91831303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45915671 + 45915672.

It is an arithmetic number, because the mean of its divisors is an integer number (45915672).

Almost surely, 2^91831343 is an apocalyptic number.

91831343 is a deficient number, since it is larger than the sum of its proper divisors (1).

91831343 is an equidigital number, since it uses as much as digits as its factorization.

91831343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 91831343 is about 9582.8671596762. The cubic root of 91831343 is about 451.1597132154.

The spelling of 91831343 in words is "ninety-one million, eight hundred thirty-one thousand, three hundred forty-three".