30234470621 has 4 divisors (see below), whose sum is σ = 30234846144. Its totient is φ = 30234095100.

The previous prime is 30234470597. The next prime is 30234470627. The reversal of 30234470621 is 12607443203.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12607443203 = 1367 ⋅9222709.

It is a cyclic number.

It is not a de Polignac number, because 30234470621 - 2⁶ = 30234470557 is a prime.

It is a super-2 number, since 2×30234470621² (a number of 22 digits) contains 22 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 (30234470627) 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, 12395 + ... + 246216.

It is an arithmetic number, because the mean of its divisors is an integer number (7558711536).

Almost surely, 2^30234470621 is an apocalyptic number.

It is an amenable number.

30234470621 is a deficient number, since it is larger than the sum of its proper divisors (375523).

30234470621 is a wasteful number, since it uses less digits than its factorization.

30234470621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375522.

The product of its (nonzero) digits is 24192, while the sum is 32.

The spelling of 30234470621 in words is "thirty billion, two hundred thirty-four million, four hundred seventy thousand, six hundred twenty-one".