263505214331 has 2 divisors, whose sum is σ = 263505214332. Its totient is φ = 263505214330.

The previous prime is 263505214319. The next prime is 263505214351. The reversal of 263505214331 is 133412505362.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263505214331 is a prime.

It is a super-2 number, since 2×263505214331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 263505214291 and 263505214300.

It is not a weakly prime, because it can be changed into another prime (263505214351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131752607165 + 131752607166.

It is an arithmetic number, because the mean of its divisors is an integer number (131752607166).

Almost surely, 2^263505214331 is an apocalyptic number.

263505214331 is a deficient number, since it is larger than the sum of its proper divisors (1).

263505214331 is an equidigital number, since it uses as much as digits as its factorization.

263505214331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 263505214331 its reverse (133412505362), we get a palindrome (396917719693).

The spelling of 263505214331 in words is "two hundred sixty-three billion, five hundred five million, two hundred fourteen thousand, three hundred thirty-one".