73120242331 has 2 divisors, whose sum is σ = 73120242332. Its totient is φ = 73120242330.

The previous prime is 73120242329. The next prime is 73120242337. The reversal of 73120242331 is 13324202137.

It is a weak prime.

It is an emirp because it is prime and its reverse (13324202137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73120242331 - 2¹ = 73120242329 is a prime.

It is a super-2 number, since 2×73120242331² (a number of 23 digits) contains 22 as substring.

Together with 73120242329, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 73120242331.

It is not a weakly prime, because it can be changed into another prime (73120242337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36560121165 + 36560121166.

It is an arithmetic number, because the mean of its divisors is an integer number (36560121166).

Almost surely, 2^73120242331 is an apocalyptic number.

73120242331 is a deficient number, since it is larger than the sum of its proper divisors (1).

73120242331 is an equidigital number, since it uses as much as digits as its factorization.

73120242331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 73120242331 its reverse (13324202137), we get a palindrome (86444444468).

The spelling of 73120242331 in words is "seventy-three billion, one hundred twenty million, two hundred forty-two thousand, three hundred thirty-one".