631023829 has 2 divisors, whose sum is σ = 631023830. Its totient is φ = 631023828.

The previous prime is 631023779. The next prime is 631023893. The reversal of 631023829 is 928320136.

It is a happy number.

631023829 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., 572501329 + 58522500 = 23927^2 + 7650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631023829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631023794 and 631023803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631023529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315511914 + 315511915.

It is an arithmetic number, because the mean of its divisors is an integer number (315511915).

Almost surely, 2^631023829 is an apocalyptic number.

It is an amenable number.

631023829 is a deficient number, since it is larger than the sum of its proper divisors (1).

631023829 is an equidigital number, since it uses as much as digits as its factorization.

631023829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 631023829 is about 25120.1876784390. The cubic root of 631023829 is about 857.7260229185.

The spelling of 631023829 in words is "six hundred thirty-one million, twenty-three thousand, eight hundred twenty-nine".