210723013 has 2 divisors, whose sum is σ = 210723014. Its totient is φ = 210723012.

The previous prime is 210723001. The next prime is 210723031. The reversal of 210723013 is 310327012.

Together with next prime (210723031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188046369 + 22676644 = 13713^2 + 4762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210723013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210723083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105361506 + 105361507.

It is an arithmetic number, because the mean of its divisors is an integer number (105361507).

Almost surely, 2^210723013 is an apocalyptic number.

It is an amenable number.

210723013 is a deficient number, since it is larger than the sum of its proper divisors (1).

210723013 is an equidigital number, since it uses as much as digits as its factorization.

210723013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 210723013 is about 14516.3016295474. The cubic root of 210723013 is about 595.0735619804.

The spelling of 210723013 in words is "two hundred ten million, seven hundred twenty-three thousand, thirteen".