9731412091 has 2 divisors, whose sum is σ = 9731412092. Its totient is φ = 9731412090.

The previous prime is 9731412059. The next prime is 9731412157. The reversal of 9731412091 is 1902141379.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9731412091 - 2⁵ = 9731412059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9731412091.

It is not a weakly prime, because it can be changed into another prime (9731112091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4865706045 + 4865706046.

It is an arithmetic number, because the mean of its divisors is an integer number (4865706046).

Almost surely, 2^9731412091 is an apocalyptic number.

9731412091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9731412091 is an equidigital number, since it uses as much as digits as its factorization.

9731412091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 9731412091 is about 98647.9198513582. The cubic root of 9731412091 is about 2134.9708739379.

The spelling of 9731412091 in words is "nine billion, seven hundred thirty-one million, four hundred twelve thousand, ninety-one".