831240097 has 8 divisors (see below), whose sum is σ = 843590592. Its totient is φ = 818907600.

The previous prime is 831240083. The next prime is 831240131. The reversal of 831240097 is 790042138.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831240097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (831240017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109722 + ... + 117052.

It is an arithmetic number, because the mean of its divisors is an integer number (105448824).

Almost surely, 2^831240097 is an apocalyptic number.

It is an amenable number.

831240097 is a deficient number, since it is larger than the sum of its proper divisors (12350495).

831240097 is a wasteful number, since it uses less digits than its factorization.

831240097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8999.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 831240097 is about 28831.2347463649. The cubic root of 831240097 is about 940.2474439115.

The spelling of 831240097 in words is "eight hundred thirty-one million, two hundred forty thousand, ninety-seven".