631308312443 has 2 divisors, whose sum is σ = 631308312444. Its totient is φ = 631308312442.

The previous prime is 631308312403. The next prime is 631308312457. The reversal of 631308312443 is 344213803136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631308312443 - 2¹² = 631308308347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631308312397 and 631308312406.

It is not a weakly prime, because it can be changed into another prime (631308312403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315654156221 + 315654156222.

It is an arithmetic number, because the mean of its divisors is an integer number (315654156222).

Almost surely, 2^631308312443 is an apocalyptic number.

631308312443 is a deficient number, since it is larger than the sum of its proper divisors (1).

631308312443 is an equidigital number, since it uses as much as digits as its factorization.

631308312443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 631308312443 in words is "six hundred thirty-one billion, three hundred eight million, three hundred twelve thousand, four hundred forty-three".