263121463 has 16 divisors (see below), whose sum is σ = 296110080. Its totient is φ = 231748000.

The previous prime is 263121457. The next prime is 263121473. The reversal of 263121463 is 364121362.

It is not a de Polignac number, because 263121463 - 2¹³ = 263113271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263121413) 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 in 15 ways as a sum of consecutive naturals, for example, 49698 + ... + 54736.

It is an arithmetic number, because the mean of its divisors is an integer number (18506880).

Almost surely, 2^263121463 is an apocalyptic number.

263121463 is a deficient number, since it is larger than the sum of its proper divisors (32988617).

263121463 is a wasteful number, since it uses less digits than its factorization.

263121463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198.

The product of its digits is 5184, while the sum is 28.

The square root of 263121463 is about 16221.0191726661. The cubic root of 263121463 is about 640.7944747830.

The spelling of 263121463 in words is "two hundred sixty-three million, one hundred twenty-one thousand, four hundred sixty-three".