681362203 has 2 divisors, whose sum is σ = 681362204. Its totient is φ = 681362202.

The previous prime is 681362191. The next prime is 681362207. The reversal of 681362203 is 302263186.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-681362203 is a prime.

It is not a weakly prime, because it can be changed into another prime (681362207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340681101 + 340681102.

It is an arithmetic number, because the mean of its divisors is an integer number (340681102).

Almost surely, 2^681362203 is an apocalyptic number.

681362203 is a deficient number, since it is larger than the sum of its proper divisors (1).

681362203 is an equidigital number, since it uses as much as digits as its factorization.

681362203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 681362203 is about 26102.9156034340. The cubic root of 681362203 is about 879.9527363562.

The spelling of 681362203 in words is "six hundred eighty-one million, three hundred sixty-two thousand, two hundred three".