91030102231 has 4 divisors (see below), whose sum is σ = 91064888992. Its totient is φ = 90995315472.

The previous prime is 91030102217. The next prime is 91030102243. The reversal of 91030102231 is 13220103019.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91030102231 - 2⁵ = 91030102199 is a prime.

It is a super-2 number, since 2×91030102231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91030102201) 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 3 ways as a sum of consecutive naturals, for example, 17389455 + ... + 17394688.

It is an arithmetic number, because the mean of its divisors is an integer number (22766222248).

Almost surely, 2^91030102231 is an apocalyptic number.

91030102231 is a deficient number, since it is larger than the sum of its proper divisors (34786761).

91030102231 is a wasteful number, since it uses less digits than its factorization.

91030102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34786760.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 91030102231 in words is "ninety-one billion, thirty million, one hundred two thousand, two hundred thirty-one".