631332242 has 8 divisors (see below), whose sum is σ = 947303100. Its totient is φ = 315564544.

The previous prime is 631332241. The next prime is 631332257. The reversal of 631332242 is 242233136.

It can be written as a sum of positive squares in 2 ways, for example, as 552673081 + 78659161 = 23509^2 + 8869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (631332241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42767 + ... + 55602.

Almost surely, 2^631332242 is an apocalyptic number.

631332242 is a deficient number, since it is larger than the sum of its proper divisors (315970858).

631332242 is a wasteful number, since it uses less digits than its factorization.

631332242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101580.

The product of its digits is 5184, while the sum is 26.

The square root of 631332242 is about 25126.3256764693. The cubic root of 631332242 is about 857.8657380705.

Adding to 631332242 its reverse (242233136), we get a palindrome (873565378).

The spelling of 631332242 in words is "six hundred thirty-one million, three hundred thirty-two thousand, two hundred forty-two".