631601263049 has 2 divisors, whose sum is σ = 631601263050. Its totient is φ = 631601263048.

The previous prime is 631601263009. The next prime is 631601263091. The reversal of 631601263049 is 940362106136.

631601263049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622470505024 + 9130758025 = 788968^2 + 95555^2 .

It is a cyclic number.

It is not a de Polignac number, because 631601263049 - 2³² = 627306295753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631601262997 and 631601263015.

It is not a weakly prime, because it can be changed into another prime (631601263009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315800631524 + 315800631525.

It is an arithmetic number, because the mean of its divisors is an integer number (315800631525).

Almost surely, 2^631601263049 is an apocalyptic number.

It is an amenable number.

631601263049 is a deficient number, since it is larger than the sum of its proper divisors (1).

631601263049 is an equidigital number, since it uses as much as digits as its factorization.

631601263049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 631601263049 in words is "six hundred thirty-one billion, six hundred one million, two hundred sixty-three thousand, forty-nine".