631711453540 has 24 divisors (see below), whose sum is σ = 1331755907832. Its totient is φ = 251701370880.

The previous prime is 631711453531. The next prime is 631711453577. The reversal of 631711453540 is 45354117136.

It is a happy number.

631711453540 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 343602302976 + 288109150564 = 586176^2 + 536758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 631711453493 and 631711453502.

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, 61445391 + ... + 61455670.

It is an arithmetic number, because the mean of its divisors is an integer number (55489829493).

Almost surely, 2^631711453540 is an apocalyptic number.

It is an amenable number.

631711453540 is an abundant number, since it is smaller than the sum of its proper divisors (700044454292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631711453540 is a wasteful number, since it uses less digits than its factorization.

631711453540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122901327 (or 122901325 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 631711453540 in words is "six hundred thirty-one billion, seven hundred eleven million, four hundred fifty-three thousand, five hundred forty".