631671332 has 6 divisors (see below), whose sum is σ = 1105424838. Its totient is φ = 315835664.

The previous prime is 631671317. The next prime is 631671343. The reversal of 631671332 is 233176136.

It can be written as a sum of positive squares in only one way, i.e., 321700096 + 309971236 = 17936^2 + 17606^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78958913 + ... + 78958920.

It is an arithmetic number, because the mean of its divisors is an integer number (184237473).

Almost surely, 2^631671332 is an apocalyptic number.

It is an amenable number.

631671332 is a deficient number, since it is larger than the sum of its proper divisors (473753506).

631671332 is a wasteful number, since it uses less digits than its factorization.

631671332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157917837 (or 157917835 counting only the distinct ones).

The product of its digits is 13608, while the sum is 32.

The square root of 631671332 is about 25133.0724743315. The cubic root of 631671332 is about 858.0192978020.

The spelling of 631671332 in words is "six hundred thirty-one million, six hundred seventy-one thousand, three hundred thirty-two".