681303229 has 2 divisors, whose sum is σ = 681303230. Its totient is φ = 681303228.

The previous prime is 681303221. The next prime is 681303281. The reversal of 681303229 is 922303186.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427538329 + 253764900 = 20677^2 + 15930^2 .

It is a cyclic number.

It is not a de Polignac number, because 681303229 - 2³ = 681303221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 681303194 and 681303203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681303221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340651614 + 340651615.

It is an arithmetic number, because the mean of its divisors is an integer number (340651615).

Almost surely, 2^681303229 is an apocalyptic number.

It is an amenable number.

681303229 is a deficient number, since it is larger than the sum of its proper divisors (1).

681303229 is an equidigital number, since it uses as much as digits as its factorization.

681303229 is an evil number, because the sum of its binary digits is even.

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

The square root of 681303229 is about 26101.7859350658. The cubic root of 681303229 is about 879.9273480827.

The spelling of 681303229 in words is "six hundred eighty-one million, three hundred three thousand, two hundred twenty-nine".