72230311 has 2 divisors, whose sum is σ = 72230312. Its totient is φ = 72230310.

The previous prime is 72230309. The next prime is 72230317. The reversal of 72230311 is 11303227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72230311 - 2¹ = 72230309 is a prime.

Together with 72230309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72230317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36115155 + 36115156.

It is an arithmetic number, because the mean of its divisors is an integer number (36115156).

Almost surely, 2^72230311 is an apocalyptic number.

72230311 is a deficient number, since it is larger than the sum of its proper divisors (1).

72230311 is an equidigital number, since it uses as much as digits as its factorization.

72230311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 72230311 is about 8498.8417446144. The cubic root of 72230311 is about 416.4598722814.

Adding to 72230311 its reverse (11303227), we get a palindrome (83533538).

The spelling of 72230311 in words is "seventy-two million, two hundred thirty thousand, three hundred eleven".