631312548 has 12 divisors (see below), whose sum is σ = 1473062640. Its totient is φ = 210437512.

The previous prime is 631312531. The next prime is 631312559. The reversal of 631312548 is 845213136.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26304678 + ... + 26304701.

It is an arithmetic number, because the mean of its divisors is an integer number (122755220).

Almost surely, 2^631312548 is an apocalyptic number.

It is an amenable number.

631312548 is an abundant number, since it is smaller than the sum of its proper divisors (841750092).

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

631312548 is a wasteful number, since it uses less digits than its factorization.

631312548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52609386 (or 52609384 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 631312548 is about 25125.9337736929. The cubic root of 631312548 is about 857.8568177892.

The spelling of 631312548 in words is "six hundred thirty-one million, three hundred twelve thousand, five hundred forty-eight".