213153133 has 2 divisors, whose sum is σ = 213153134. Its totient is φ = 213153132.

The previous prime is 213153013. The next prime is 213153169. The reversal of 213153133 is 331351312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213101604 + 51529 = 14598^2 + 227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213153133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213163133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106576566 + 106576567.

It is an arithmetic number, because the mean of its divisors is an integer number (106576567).

Almost surely, 2^213153133 is an apocalyptic number.

It is an amenable number.

213153133 is a deficient number, since it is larger than the sum of its proper divisors (1).

213153133 is an equidigital number, since it uses as much as digits as its factorization.

213153133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 22.

The square root of 213153133 is about 14599.7648268731. The cubic root of 213153133 is about 597.3523457676.

The spelling of 213153133 in words is "two hundred thirteen million, one hundred fifty-three thousand, one hundred thirty-three".