631287534441 has 8 divisors (see below), whose sum is σ = 842754590944. Its totient is φ = 420339417120.

The previous prime is 631287534439. The next prime is 631287534491. The reversal of 631287534441 is 144435782136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 631287534441 - 2¹ = 631287534439 is a prime.

It is a super-2 number, since 2×631287534441² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631287534491) 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 7 ways as a sum of consecutive naturals, for example, 129731956 + ... + 129736821.

It is an arithmetic number, because the mean of its divisors is an integer number (105344323868).

Almost surely, 2^631287534441 is an apocalyptic number.

It is an amenable number.

631287534441 is a deficient number, since it is larger than the sum of its proper divisors (211467056503).

631287534441 is a wasteful number, since it uses less digits than its factorization.

631287534441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259469591.

The product of its digits is 1935360, while the sum is 48.

The spelling of 631287534441 in words is "six hundred thirty-one billion, two hundred eighty-seven million, five hundred thirty-four thousand, four hundred forty-one".