30717841997 has 4 divisors (see below), whose sum is σ = 31106675520. Its totient is φ = 30329008476.

The previous prime is 30717841993. The next prime is 30717842003. The reversal of 30717841997 is 79914871703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30717841997 - 2² = 30717841993 is a prime.

It is a super-5 number, since 5×30717841997⁵ (a number of 54 digits) contains 55555 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 (30717841993) 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, 194416643 + ... + 194416800.

It is an arithmetic number, because the mean of its divisors is an integer number (7776668880).

Almost surely, 2^30717841997 is an apocalyptic number.

It is an amenable number.

30717841997 is a deficient number, since it is larger than the sum of its proper divisors (388833523).

30717841997 is an equidigital number, since it uses as much as digits as its factorization.

30717841997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388833522.

The product of its (nonzero) digits is 2667168, while the sum is 56.

The spelling of 30717841997 in words is "thirty billion, seven hundred seventeen million, eight hundred forty-one thousand, nine hundred ninety-seven".