213333429 has 4 divisors (see below), whose sum is σ = 284444576. Its totient is φ = 142222284.

The previous prime is 213333403. The next prime is 213333433. The reversal of 213333429 is 924333312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 213333429 - 2⁵ = 213333397 is a prime.

It is a super-2 number, since 2×213333429² = 91022303857796082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213333396 and 213333405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213333479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35555569 + ... + 35555574.

It is an arithmetic number, because the mean of its divisors is an integer number (71111144).

Almost surely, 2^213333429 is an apocalyptic number.

It is an amenable number.

213333429 is a deficient number, since it is larger than the sum of its proper divisors (71111147).

213333429 is an equidigital number, since it uses as much as digits as its factorization.

213333429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71111146.

The product of its digits is 11664, while the sum is 30.

The square root of 213333429 is about 14605.9381417285. The cubic root of 213333429 is about 597.5207221912.

The spelling of 213333429 in words is "two hundred thirteen million, three hundred thirty-three thousand, four hundred twenty-nine".