631342771 has 4 divisors (see below), whose sum is σ = 638436600. Its totient is φ = 624248944.

The previous prime is 631342769. The next prime is 631342793. The reversal of 631342771 is 177243136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 631342771 - 2¹ = 631342769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631342871) 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, 3546781 + ... + 3546958.

It is an arithmetic number, because the mean of its divisors is an integer number (159609150).

Almost surely, 2^631342771 is an apocalyptic number.

631342771 is a deficient number, since it is larger than the sum of its proper divisors (7093829).

631342771 is an equidigital number, since it uses as much as digits as its factorization.

631342771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7093828.

The product of its digits is 21168, while the sum is 34.

The square root of 631342771 is about 25126.5351968790. The cubic root of 631342771 is about 857.8705070429.

The spelling of 631342771 in words is "six hundred thirty-one million, three hundred forty-two thousand, seven hundred seventy-one".