31224231011 has 2 divisors, whose sum is σ = 31224231012. Its totient is φ = 31224231010.

The previous prime is 31224230987. The next prime is 31224231019. The reversal of 31224231011 is 11013242213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31224231011 is a prime.

It is not a weakly prime, because it can be changed into another prime (31224231019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15612115505 + 15612115506.

It is an arithmetic number, because the mean of its divisors is an integer number (15612115506).

Almost surely, 2^31224231011 is an apocalyptic number.

31224231011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31224231011 is an equidigital number, since it uses as much as digits as its factorization.

31224231011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31224231011 its reverse (11013242213), we get a palindrome (42237473224).

The spelling of 31224231011 in words is "thirty-one billion, two hundred twenty-four million, two hundred thirty-one thousand, eleven".