91130373 has 32 divisors (see below), whose sum is σ = 140849280. Its totient is φ = 58181760.

The previous prime is 91130363. The next prime is 91130407. The reversal of 91130373 is 37303119.

It is not a de Polignac number, because 91130373 - 2⁴ = 91130357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91130323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60793 + ... + 62273.

It is an arithmetic number, because the mean of its divisors is an integer number (4401540).

Almost surely, 2^91130373 is an apocalyptic number.

It is an amenable number.

91130373 is a deficient number, since it is larger than the sum of its proper divisors (49718907).

91130373 is a wasteful number, since it uses less digits than its factorization.

91130373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586 (or 1580 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 27.

The square root of 91130373 is about 9546.2229703690. Note that the first 3 decimals coincide. The cubic root of 91130373 is about 450.0088442706.

The spelling of 91130373 in words is "ninety-one million, one hundred thirty thousand, three hundred seventy-three".