30531022421 has 8 divisors (see below), whose sum is σ = 31518883584. Its totient is φ = 29543348160.

The previous prime is 30531022283. The next prime is 30531022429. The reversal of 30531022421 is 12422013503.

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

It is a cyclic number.

It is not a de Polignac number, because 30531022421 - 2¹⁸ = 30530760277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30531022429) 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, 334850 + ... + 416156.

It is an arithmetic number, because the mean of its divisors is an integer number (3939860448).

Almost surely, 2^30531022421 is an apocalyptic number.

30531022421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30531022421 is a deficient number, since it is larger than the sum of its proper divisors (987861163).

30531022421 is a wasteful number, since it uses less digits than its factorization.

30531022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93451.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 30531022421 its reverse (12422013503), we get a palindrome (42953035924).

The spelling of 30531022421 in words is "thirty billion, five hundred thirty-one million, twenty-two thousand, four hundred twenty-one".