210723133 has 2 divisors, whose sum is σ = 210723134. Its totient is φ = 210723132.

The previous prime is 210723119. The next prime is 210723173. The reversal of 210723133 is 331327012.

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., 171007929 + 39715204 = 13077^2 + 6302^2 .

It is a cyclic number.

It is not a de Polignac number, because 210723133 - 2¹⁷ = 210592061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210723113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105361566 + 105361567.

It is an arithmetic number, because the mean of its divisors is an integer number (105361567).

Almost surely, 2^210723133 is an apocalyptic number.

It is an amenable number.

210723133 is a deficient number, since it is larger than the sum of its proper divisors (1).

210723133 is an equidigital number, since it uses as much as digits as its factorization.

210723133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 210723133 is about 14516.3057628310. The cubic root of 210723133 is about 595.0736749388.

The spelling of 210723133 in words is "two hundred ten million, seven hundred twenty-three thousand, one hundred thirty-three".