631213276 has 12 divisors (see below), whose sum is σ = 1117035360. Its totient is φ = 312060320.

The previous prime is 631213273. The next prime is 631213277. The reversal of 631213276 is 672312136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631213273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886180 + ... + 886891.

It is an arithmetic number, because the mean of its divisors is an integer number (93086280).

Almost surely, 2^631213276 is an apocalyptic number.

It is an amenable number.

631213276 is a deficient number, since it is larger than the sum of its proper divisors (485822084).

631213276 is a wasteful number, since it uses less digits than its factorization.

631213276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773164 (or 1773162 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 631213276 is about 25123.9582072571. The cubic root of 631213276 is about 857.8118502971.

The spelling of 631213276 in words is "six hundred thirty-one million, two hundred thirteen thousand, two hundred seventy-six".