97731995 has 8 divisors (see below), whose sum is σ = 121061760. Its totient is φ = 75663360.

The previous prime is 97731967. The next prime is 97732027. The reversal of 97731995 is 59913779.

It is a happy number.

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

It is not a de Polignac number, because 97731995 - 2¹⁸ = 97469851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315110 + ... + 315419.

It is an arithmetic number, because the mean of its divisors is an integer number (15132720).

Almost surely, 2^97731995 is an apocalyptic number.

97731995 is a deficient number, since it is larger than the sum of its proper divisors (23329765).

97731995 is a wasteful number, since it uses less digits than its factorization.

97731995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630565.

The product of its digits is 535815, while the sum is 50.

The square root of 97731995 is about 9885.9493727209. The cubic root of 97731995 is about 460.6229665999.

The spelling of 97731995 in words is "ninety-seven million, seven hundred thirty-one thousand, nine hundred ninety-five".