263131455287 has 2 divisors, whose sum is σ = 263131455288. Its totient is φ = 263131455286.

The previous prime is 263131455281. The next prime is 263131455343. The reversal of 263131455287 is 782554131362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263131455287 - 2¹⁶ = 263131389751 is a prime.

It is a super-2 number, since 2×263131455287² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263131455281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131565727643 + 131565727644.

It is an arithmetic number, because the mean of its divisors is an integer number (131565727644).

Almost surely, 2^263131455287 is an apocalyptic number.

263131455287 is a deficient number, since it is larger than the sum of its proper divisors (1).

263131455287 is an equidigital number, since it uses as much as digits as its factorization.

263131455287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 47.

The spelling of 263131455287 in words is "two hundred sixty-three billion, one hundred thirty-one million, four hundred fifty-five thousand, two hundred eighty-seven".