97243831 has 4 divisors (see below), whose sum is σ = 97297200. Its totient is φ = 97190464.

The previous prime is 97243823. The next prime is 97243889. The reversal of 97243831 is 13834279.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97243831 - 2³ = 97243823 is a prime.

It is a super-2 number, since 2×97243831² = 18912725335113122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97243891) 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 3 ways as a sum of consecutive naturals, for example, 23851 + ... + 27628.

It is an arithmetic number, because the mean of its divisors is an integer number (24324300).

Almost surely, 2^97243831 is an apocalyptic number.

97243831 is a deficient number, since it is larger than the sum of its proper divisors (53369).

97243831 is a wasteful number, since it uses less digits than its factorization.

97243831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53368.

The product of its digits is 36288, while the sum is 37.

The square root of 97243831 is about 9861.2286759815. The cubic root of 97243831 is about 459.8547603853.

The spelling of 97243831 in words is "ninety-seven million, two hundred forty-three thousand, eight hundred thirty-one".