631503652 has 36 divisors (see below), whose sum is σ = 1237984020. Its totient is φ = 281404032.

The previous prime is 631503637. The next prime is 631503671. The reversal of 631503652 is 256305136.

It can be written as a sum of positive squares in 6 ways, for example, as 8202496 + 623301156 = 2864^2 + 24966^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3498 + ... + 35710.

It is an arithmetic number, because the mean of its divisors is an integer number (34388445).

Almost surely, 2^631503652 is an apocalyptic number.

It is an amenable number.

631503652 is a deficient number, since it is larger than the sum of its proper divisors (606480368).

631503652 is a wasteful number, since it uses less digits than its factorization.

631503652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32272 (or 32257 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 631503652 is about 25129.7364092821. The cubic root of 631503652 is about 857.9433693875.

Adding to 631503652 its reverse (256305136), we get a palindrome (887808788).

The spelling of 631503652 in words is "six hundred thirty-one million, five hundred three thousand, six hundred fifty-two".