631097863829 has 2 divisors, whose sum is σ = 631097863830. Its totient is φ = 631097863828.

The previous prime is 631097863771. The next prime is 631097863849. The reversal of 631097863829 is 928368790136.

631097863829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555357319729 + 75740544100 = 745223^2 + 275210^2 .

It is a cyclic number.

It is not a de Polignac number, because 631097863829 - 2²⁴ = 631081086613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631097863849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315548931914 + 315548931915.

It is an arithmetic number, because the mean of its divisors is an integer number (315548931915).

Almost surely, 2^631097863829 is an apocalyptic number.

It is an amenable number.

631097863829 is a deficient number, since it is larger than the sum of its proper divisors (1).

631097863829 is an equidigital number, since it uses as much as digits as its factorization.

631097863829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 631097863829 in words is "six hundred thirty-one billion, ninety-seven million, eight hundred sixty-three thousand, eight hundred twenty-nine".