631861799383 has 2 divisors, whose sum is σ = 631861799384. Its totient is φ = 631861799382.

The previous prime is 631861799377. The next prime is 631861799411. The reversal of 631861799383 is 383997168136.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631861799383 - 2⁹ = 631861798871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631861797383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315930899691 + 315930899692.

It is an arithmetic number, because the mean of its divisors is an integer number (315930899692).

Almost surely, 2^631861799383 is an apocalyptic number.

631861799383 is a deficient number, since it is larger than the sum of its proper divisors (1).

631861799383 is an equidigital number, since it uses as much as digits as its factorization.

631861799383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 64.

The spelling of 631861799383 in words is "six hundred thirty-one billion, eight hundred sixty-one million, seven hundred ninety-nine thousand, three hundred eighty-three".