30893434471 has 4 divisors (see below), whose sum is σ = 31193370832. Its totient is φ = 30593498112.

The previous prime is 30893434463. The next prime is 30893434483. The reversal of 30893434471 is 17443439803.

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 30893434471 - 2³ = 30893434463 is a prime.

It is a super-3 number, since 3×30893434471³ (a number of 32 digits) contains 333 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 (30893434421) 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, 149968026 + ... + 149968231.

It is an arithmetic number, because the mean of its divisors is an integer number (7798342708).

Almost surely, 2^30893434471 is an apocalyptic number.

30893434471 is a deficient number, since it is larger than the sum of its proper divisors (299936361).

30893434471 is a wasteful number, since it uses less digits than its factorization.

30893434471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299936360.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 30893434471 in words is "thirty billion, eight hundred ninety-three million, four hundred thirty-four thousand, four hundred seventy-one".