53311231 has 2 divisors, whose sum is σ = 53311232. Its totient is φ = 53311230.

The previous prime is 53311213. The next prime is 53311241. The reversal of 53311231 is 13211335.

Together with previous prime (53311213) 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 53311231 - 2¹¹ = 53309183 is a prime.

It is a super-2 number, since 2×53311231² = 5684174701470722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53311199 and 53311208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53311211) 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, 26655615 + 26655616.

It is an arithmetic number, because the mean of its divisors is an integer number (26655616).

Almost surely, 2^53311231 is an apocalyptic number.

53311231 is a deficient number, since it is larger than the sum of its proper divisors (1).

53311231 is an equidigital number, since it uses as much as digits as its factorization.

53311231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 19.

The square root of 53311231 is about 7301.4540332731. The cubic root of 53311231 is about 376.3624066378.

Adding to 53311231 its reverse (13211335), we get a palindrome (66522566).

The spelling of 53311231 in words is "fifty-three million, three hundred eleven thousand, two hundred thirty-one".