30726422231 has 2 divisors, whose sum is σ = 30726422232. Its totient is φ = 30726422230.

The previous prime is 30726422201. The next prime is 30726422257. The reversal of 30726422231 is 13222462703.

It is a strong prime.

It is an emirp because it is prime and its reverse (13222462703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30726422231 - 2²² = 30722227927 is a prime.

It is a super-2 number, since 2×30726422231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30726422201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15363211115 + 15363211116.

It is an arithmetic number, because the mean of its divisors is an integer number (15363211116).

Almost surely, 2^30726422231 is an apocalyptic number.

30726422231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30726422231 is an equidigital number, since it uses as much as digits as its factorization.

30726422231 is an evil number, because the sum of its binary digits is even.

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

Adding to 30726422231 its reverse (13222462703), we get a palindrome (43948884934).

The spelling of 30726422231 in words is "thirty billion, seven hundred twenty-six million, four hundred twenty-two thousand, two hundred thirty-one".