631474771 has 2 divisors, whose sum is σ = 631474772. Its totient is φ = 631474770.

The previous prime is 631474703. The next prime is 631474777. The reversal of 631474771 is 177474136.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631474771 - 2¹⁵ = 631442003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (631474777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315737385 + 315737386.

It is an arithmetic number, because the mean of its divisors is an integer number (315737386).

Almost surely, 2^631474771 is an apocalyptic number.

631474771 is a deficient number, since it is larger than the sum of its proper divisors (1).

631474771 is an equidigital number, since it uses as much as digits as its factorization.

631474771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 40.

The square root of 631474771 is about 25129.1617647704. The cubic root of 631474771 is about 857.9302902126.

The spelling of 631474771 in words is "six hundred thirty-one million, four hundred seventy-four thousand, seven hundred seventy-one".