97843302731 has 4 divisors (see below), whose sum is σ = 97958008512. Its totient is φ = 97728596952.

The previous prime is 97843302707. The next prime is 97843302751. The reversal of 97843302731 is 13720334879.

It is a happy number.

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-97843302731 is a prime.

It is a super-2 number, since 2×97843302731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97843302751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57351611 + ... + 57353316.

It is an arithmetic number, because the mean of its divisors is an integer number (24489502128).

Almost surely, 2^97843302731 is an apocalyptic number.

97843302731 is a deficient number, since it is larger than the sum of its proper divisors (114705781).

97843302731 is a wasteful number, since it uses less digits than its factorization.

97843302731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114705780.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 97843302731 in words is "ninety-seven billion, eight hundred forty-three million, three hundred two thousand, seven hundred thirty-one".