30213212231 has 4 divisors (see below), whose sum is σ = 30213986712. Its totient is φ = 30212437752.

The previous prime is 30213212203. The next prime is 30213212233. The reversal of 30213212231 is 13221231203.

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 30213212231 - 2²⁶ = 30146103367 is a prime.

It is a super-2 number, since 2×30213212231² (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 (30213212233) 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, 325436 + ... + 407841.

It is an arithmetic number, because the mean of its divisors is an integer number (7553496678).

Almost surely, 2^30213212231 is an apocalyptic number.

30213212231 is a deficient number, since it is larger than the sum of its proper divisors (774481).

30213212231 is an equidigital number, since it uses as much as digits as its factorization.

30213212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774480.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30213212231 its reverse (13221231203), we get a palindrome (43434443434).

The spelling of 30213212231 in words is "thirty billion, two hundred thirteen million, two hundred twelve thousand, two hundred thirty-one".