97381191 has 16 divisors (see below), whose sum is σ = 133781760. Its totient is φ = 62969280.

The previous prime is 97381171. The next prime is 97381243. The reversal of 97381191 is 19118379.

It is not a de Polignac number, because 97381191 - 2⁶ = 97381127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97381171) 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 15 ways as a sum of consecutive naturals, for example, 19806 + ... + 24228.

It is an arithmetic number, because the mean of its divisors is an integer number (8361360).

Almost surely, 2^97381191 is an apocalyptic number.

97381191 is a deficient number, since it is larger than the sum of its proper divisors (36400569).

97381191 is a wasteful number, since it uses less digits than its factorization.

97381191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646.

The product of its digits is 13608, while the sum is 39.

The square root of 97381191 is about 9868.1908676312. The cubic root of 97381191 is about 460.0711783366.

The spelling of 97381191 in words is "ninety-seven million, three hundred eighty-one thousand, one hundred ninety-one".