631203468851 has 4 divisors (see below), whose sum is σ = 651564871104. Its totient is φ = 610842066600.

The previous prime is 631203468809. The next prime is 631203469063. The reversal of 631203468851 is 158864302136.

631203468851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 631203468851 - 2¹⁸ = 631203206707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 631203468796 and 631203468805.

It is not an unprimeable number, because it can be changed into a prime (631203408851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10180701080 + ... + 10180701141.

It is an arithmetic number, because the mean of its divisors is an integer number (162891217776).

Almost surely, 2^631203468851 is an apocalyptic number.

631203468851 is a deficient number, since it is larger than the sum of its proper divisors (20361402253).

631203468851 is a wasteful number, since it uses less digits than its factorization.

631203468851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20361402252.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 631203468851 in words is "six hundred thirty-one billion, two hundred three million, four hundred sixty-eight thousand, eight hundred fifty-one".