30213031231 has 2 divisors, whose sum is σ = 30213031232. Its totient is φ = 30213031230.

The previous prime is 30213031183. The next prime is 30213031307. The reversal of 30213031231 is 13213031203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30213031231 - 2¹⁵ = 30212998463 is a prime.

It is a super-2 number, since 2×30213031231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30213031199 and 30213031208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30213041231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106515615 + 15106515616.

It is an arithmetic number, because the mean of its divisors is an integer number (15106515616).

Almost surely, 2^30213031231 is an apocalyptic number.

30213031231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30213031231 is an equidigital number, since it uses as much as digits as its factorization.

30213031231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30213031231 its reverse (13213031203), we get a palindrome (43426062434).

The spelling of 30213031231 in words is "thirty billion, two hundred thirteen million, thirty-one thousand, two hundred thirty-one".