631124441 has 2 divisors, whose sum is σ = 631124442. Its totient is φ = 631124440.

The previous prime is 631124407. The next prime is 631124453. The reversal of 631124441 is 144421136.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 466387216 + 164737225 = 21596^2 + 12835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631124441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631124441.

It is not a weakly prime, because it can be changed into another prime (631124471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315562220 + 315562221.

It is an arithmetic number, because the mean of its divisors is an integer number (315562221).

Almost surely, 2^631124441 is an apocalyptic number.

It is an amenable number.

631124441 is a deficient number, since it is larger than the sum of its proper divisors (1).

631124441 is an equidigital number, since it uses as much as digits as its factorization.

631124441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 631124441 is about 25122.1902110465. The cubic root of 631124441 is about 857.7716064821.

Adding to 631124441 its reverse (144421136), we get a palindrome (775545577).

The spelling of 631124441 in words is "six hundred thirty-one million, one hundred twenty-four thousand, four hundred forty-one".