30312012223 has 4 divisors (see below), whose sum is σ = 30652596720. Its totient is φ = 29971427728.

The previous prime is 30312012193. The next prime is 30312012251. The reversal of 30312012223 is 32221021303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32221021303 = 9811 ⋅3284173.

It is a cyclic number.

It is not a de Polignac number, because 30312012223 - 2⁵ = 30312012191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30312012223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312012023) 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, 170292115 + ... + 170292292.

It is an arithmetic number, because the mean of its divisors is an integer number (7663149180).

Almost surely, 2^30312012223 is an apocalyptic number.

30312012223 is a deficient number, since it is larger than the sum of its proper divisors (340584497).

30312012223 is an equidigital number, since it uses as much as digits as its factorization.

30312012223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340584496.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30312012223 its reverse (32221021303), we get a palindrome (62533033526).

The spelling of 30312012223 in words is "thirty billion, three hundred twelve million, twelve thousand, two hundred twenty-three".