631812833438011 has 4 divisors (see below), whose sum is σ = 659282956630992. Its totient is φ = 604342710245032.

The previous prime is 631812833437957. The next prime is 631812833438029. The reversal of 631812833438011 is 110834338218136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 631812833438011 - 2⁴⁹ = 68862880016699 is a prime.

It is a super-2 number, since 2×631812833438011² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 631812833438011.

It is not an unprimeable number, because it can be changed into a prime (631812833408011) 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 in 3 ways as a sum of consecutive naturals, for example, 13735061596456 + ... + 13735061596501.

It is an arithmetic number, because the mean of its divisors is an integer number (164820739157748).

Almost surely, 2^{631812833438011} is an apocalyptic number.

631812833438011 is a deficient number, since it is larger than the sum of its proper divisors (27470123192981).

631812833438011 is a wasteful number, since it uses less digits than its factorization.

631812833438011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27470123192980.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 631812833438011 in words is "six hundred thirty-one trillion, eight hundred twelve billion, eight hundred thirty-three million, four hundred thirty-eight thousand, eleven".