631095442 has 8 divisors (see below), whose sum is σ = 946871100. Its totient is φ = 315471744.

The previous prime is 631095383. The next prime is 631095449. The reversal of 631095442 is 244590136.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 624950001 + 6145441 = 24999^2 + 2479^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 631095398 and 631095407.

It is not an unprimeable number, because it can be changed into a prime (631095449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26967 + ... + 44602.

Almost surely, 2^631095442 is an apocalyptic number.

631095442 is a deficient number, since it is larger than the sum of its proper divisors (315775658).

631095442 is a wasteful number, since it uses less digits than its factorization.

631095442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75980.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 631095442 is about 25121.6130453440. The cubic root of 631095442 is about 857.7584686083.

The spelling of 631095442 in words is "six hundred thirty-one million, ninety-five thousand, four hundred forty-two".