631401735485 has 8 divisors (see below), whose sum is σ = 762508084056. Its totient is φ = 501904054080.

The previous prime is 631401735467. The next prime is 631401735509. The reversal of 631401735485 is 584537104136.

631401735485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7235373721 + 624166361764 = 85061^2 + 790042^2 .

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

It is not a de Polignac number, because 631401735485 - 2¹⁴ = 631401719101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402165926 + ... + 402167495.

It is an arithmetic number, because the mean of its divisors is an integer number (95313510507).

Almost surely, 2^631401735485 is an apocalyptic number.

It is an amenable number.

631401735485 is a deficient number, since it is larger than the sum of its proper divisors (131106348571).

631401735485 is a wasteful number, since it uses less digits than its factorization.

631401735485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804333583.

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

The spelling of 631401735485 in words is "six hundred thirty-one billion, four hundred one million, seven hundred thirty-five thousand, four hundred eighty-five".