91431098083 has 16 divisors (see below), whose sum is σ = 106447858720. Its totient is φ = 77794960896.

The previous prime is 91431098069. The next prime is 91431098093. The reversal of 91431098083 is 38089013419.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 91431098083 - 2¹⁷ = 91430967011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91431098093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4993110 + ... + 5011387.

It is an arithmetic number, because the mean of its divisors is an integer number (6652991170).

Almost surely, 2^91431098083 is an apocalyptic number.

91431098083 is a deficient number, since it is larger than the sum of its proper divisors (15016760637).

91431098083 is a wasteful number, since it uses less digits than its factorization.

91431098083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10004566.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 91431098083 in words is "ninety-one billion, four hundred thirty-one million, ninety-eight thousand, eighty-three".