631429403441 has 2 divisors, whose sum is σ = 631429403442. Its totient is φ = 631429403440.

The previous prime is 631429403401. The next prime is 631429403447. The reversal of 631429403441 is 144304924136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 609961000000 + 21468403441 = 781000^2 + 146521^2 .

It is a cyclic number.

It is not a de Polignac number, because 631429403441 - 2¹⁸ = 631429141297 is a prime.

It is not a weakly prime, because it can be changed into another prime (631429403447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315714701720 + 315714701721.

It is an arithmetic number, because the mean of its divisors is an integer number (315714701721).

Almost surely, 2^631429403441 is an apocalyptic number.

It is an amenable number.

631429403441 is a deficient number, since it is larger than the sum of its proper divisors (1).

631429403441 is an equidigital number, since it uses as much as digits as its factorization.

631429403441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 631429403441 in words is "six hundred thirty-one billion, four hundred twenty-nine million, four hundred three thousand, four hundred forty-one".