631627141 has 2 divisors, whose sum is σ = 631627142. Its totient is φ = 631627140.

The previous prime is 631627133. The next prime is 631627151. The reversal of 631627141 is 141726136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 631064641 + 562500 = 25121^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 631627141 - 2³ = 631627133 is a prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631627121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315813570 + 315813571.

It is an arithmetic number, because the mean of its divisors is an integer number (315813571).

Almost surely, 2^631627141 is an apocalyptic number.

It is an amenable number.

631627141 is a deficient number, since it is larger than the sum of its proper divisors (1).

631627141 is an equidigital number, since it uses as much as digits as its factorization.

631627141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 631627141 is about 25132.1933185307. The cubic root of 631627141 is about 857.9992886543. Note that the first 3 decimals are identical.

The spelling of 631627141 in words is "six hundred thirty-one million, six hundred twenty-seven thousand, one hundred forty-one".