72323063231 has 2 divisors, whose sum is σ = 72323063232. Its totient is φ = 72323063230.

The previous prime is 72323063123. The next prime is 72323063251. The reversal of 72323063231 is 13236032327.

Together with previous prime (72323063123) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72323063231 - 2³⁴ = 55143194047 is a prime.

It is a super-2 number, since 2×72323063231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72323063251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36161531615 + 36161531616.

It is an arithmetic number, because the mean of its divisors is an integer number (36161531616).

Almost surely, 2^72323063231 is an apocalyptic number.

72323063231 is a deficient number, since it is larger than the sum of its proper divisors (1).

72323063231 is an equidigital number, since it uses as much as digits as its factorization.

72323063231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 32.

Adding to 72323063231 its reverse (13236032327), we get a palindrome (85559095558).

The spelling of 72323063231 in words is "seventy-two billion, three hundred twenty-three million, sixty-three thousand, two hundred thirty-one".