97931233213979 has 4 divisors (see below), whose sum is σ = 106834072597080. Its totient is φ = 89028393830880.

The previous prime is 97931233213903. The next prime is 97931233214027.

97931233213979 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97931233213979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97931233212979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4451419691534 + ... + 4451419691555.

It is an arithmetic number, because the mean of its divisors is an integer number (26708518149270).

Almost surely, 2^{97931233213979} is an apocalyptic number.

97931233213979 is a deficient number, since it is larger than the sum of its proper divisors (8902839383101).

97931233213979 is a wasteful number, since it uses less digits than its factorization.

97931233213979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8902839383100.

The product of its digits is 104162436, while the sum is 68.

The spelling of 97931233213979 in words is "ninety-seven trillion, nine hundred thirty-one billion, two hundred thirty-three million, two hundred thirteen thousand, nine hundred seventy-nine".