91130012321 has 8 divisors (see below), whose sum is σ = 91749437184. Its totient is φ = 90511652880.

The previous prime is 91130012299. The next prime is 91130012333. The reversal of 91130012321 is 12321003119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91130012321 - 2²⁶ = 91062903457 is a prime.

It is a super-2 number, since 2×91130012321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91130012381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94331 + ... + 437216.

It is an arithmetic number, because the mean of its divisors is an integer number (11468679648).

Almost surely, 2^91130012321 is an apocalyptic number.

It is an amenable number.

91130012321 is a deficient number, since it is larger than the sum of its proper divisors (619424863).

91130012321 is a wasteful number, since it uses less digits than its factorization.

91130012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532711.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 91130012321 in words is "ninety-one billion, one hundred thirty million, twelve thousand, three hundred twenty-one".