631245780243 has 24 divisors (see below), whose sum is σ = 983867124240. Its totient is φ = 387695724480.

The previous prime is 631245780241. The next prime is 631245780287. The reversal of 631245780243 is 342087542136.

631245780243 is a `hidden beast` number, since 6 + 31 + 2 + 4 + 578 + 0 + 2 + 43 = 666.

631245780243 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 631245780243 - 2¹ = 631245780241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631245780241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5240313 + ... + 5359418.

It is an arithmetic number, because the mean of its divisors is an integer number (40994463510).

Almost surely, 2^631245780243 is an apocalyptic number.

631245780243 is a deficient number, since it is larger than the sum of its proper divisors (352621343997).

631245780243 is a wasteful number, since it uses less digits than its factorization.

631245780243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600259 (or 10600256 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 631245780243 in words is "six hundred thirty-one billion, two hundred forty-five million, seven hundred eighty thousand, two hundred forty-three".