631329340 has 48 divisors (see below), whose sum is σ = 1477677600. Its totient is φ = 225165312.

The previous prime is 631329317. The next prime is 631329341. The reversal of 631329340 is 43923136.

631329340 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631329341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42405 + ... + 55324.

It is an arithmetic number, because the mean of its divisors is an integer number (30784950).

Almost surely, 2^631329340 is an apocalyptic number.

It is an amenable number.

631329340 is an abundant number, since it is smaller than the sum of its proper divisors (846348260).

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

631329340 is a wasteful number, since it uses less digits than its factorization.

631329340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97774 (or 97772 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 631329340 is about 25126.2679282061. The cubic root of 631329340 is about 857.8644236384.

It can be divided in two parts, 6313 and 29340, that added together give a palindrome (35653).

The spelling of 631329340 in words is "six hundred thirty-one million, three hundred twenty-nine thousand, three hundred forty".