631542216 has 32 divisors (see below), whose sum is σ = 1661954400. Its totient is φ = 199434240.

The previous prime is 631542179. The next prime is 631542239. The reversal of 631542216 is 612245136.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692025 + ... + 692936.

It is an arithmetic number, because the mean of its divisors is an integer number (51936075).

Almost surely, 2^631542216 is an apocalyptic number.

It is an amenable number.

631542216 is an abundant number, since it is smaller than the sum of its proper divisors (1030412184).

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

631542216 is a wasteful number, since it uses less digits than its factorization.

631542216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384989 (or 1384985 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 631542216 is about 25130.5036957081. The cubic root of 631542216 is about 857.9608330261.

The spelling of 631542216 in words is "six hundred thirty-one million, five hundred forty-two thousand, two hundred sixteen".