91483731 has 12 divisors (see below), whose sum is σ = 132425280. Its totient is φ = 60858960.

The previous prime is 91483709. The next prime is 91483771. The reversal of 91483731 is 13738419.

It is a happy number.

It is not a de Polignac number, because 91483731 - 2⁵ = 91483699 is a prime.

It is a super-2 number, since 2×91483731² = 16738546075360722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91483771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6300 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (11035440).

Almost surely, 2^91483731 is an apocalyptic number.

91483731 is a deficient number, since it is larger than the sum of its proper divisors (40941549).

91483731 is a wasteful number, since it uses less digits than its factorization.

91483731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21706 (or 21703 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 91483731 is about 9564.7128027976. The cubic root of 91483731 is about 450.5897305170.

The spelling of 91483731 in words is "ninety-one million, four hundred eighty-three thousand, seven hundred thirty-one".