631020416 has 64 divisors (see below), whose sum is σ = 1433512080. Its totient is φ = 274096128.

The previous prime is 631020359. The next prime is 631020421. The reversal of 631020416 is 614020136.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 631020391 and 631020400.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17135 + ... + 39441.

Almost surely, 2^631020416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631020416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716756040).

631020416 is an abundant number, since it is smaller than the sum of its proper divisors (802491664).

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

631020416 is a wasteful number, since it uses less digits than its factorization.

631020416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22351 (or 22339 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 631020416 is about 25120.1197449375. The cubic root of 631020416 is about 857.7244765299.

The spelling of 631020416 in words is "six hundred thirty-one million, twenty thousand, four hundred sixteen".