91423043310231 has 24 divisors (see below), whose sum is σ = 133106944946976. Its totient is φ = 60464944933440.

The previous prime is 91423043310197. The next prime is 91423043310251. The reversal of 91423043310231 is 13201334032419.

91423043310231 is a `hidden beast` number, since 9 + 1 + 4 + 2 + 304 + 3 + 310 + 2 + 31 = 666.

It is not a de Polignac number, because 91423043310231 - 2²¹ = 91423041213079 is a prime.

It is a super-2 number, since 2×91423043310231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91423043310251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62967075 + ... + 64402628.

It is an arithmetic number, because the mean of its divisors is an integer number (5546122706124).

Almost surely, 2^{91423043310231} is an apocalyptic number.

91423043310231 is a deficient number, since it is larger than the sum of its proper divisors (41683901636745).

91423043310231 is a wasteful number, since it uses less digits than its factorization.

91423043310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127370343 (or 127370340 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 91423043310231 in words is "ninety-one trillion, four hundred twenty-three billion, forty-three million, three hundred ten thousand, two hundred thirty-one".