91730131124 has 12 divisors (see below), whose sum is σ = 162000461700. Its totient is φ = 45444284928.

The previous prime is 91730131081. The next prime is 91730131127. The reversal of 91730131124 is 42113103719.

It can be written as a sum of positive squares in 2 ways, for example, as 32159966224 + 59570164900 = 179332^2 + 244070^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91730131127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105194669 + ... + 105195540.

It is an arithmetic number, because the mean of its divisors is an integer number (13500038475).

Almost surely, 2^91730131124 is an apocalyptic number.

It is an amenable number.

91730131124 is a deficient number, since it is larger than the sum of its proper divisors (70270330576).

91730131124 is a wasteful number, since it uses less digits than its factorization.

91730131124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210390322 (or 210390320 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 91730131124 in words is "ninety-one billion, seven hundred thirty million, one hundred thirty-one thousand, one hundred twenty-four".