213958533 has 4 divisors (see below), whose sum is σ = 285278048. Its totient is φ = 142639020.

The previous prime is 213958529. The next prime is 213958553. The reversal of 213958533 is 335859312.

213958533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213958533 - 2² = 213958529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213958491 and 213958500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213958513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35659753 + ... + 35659758.

It is an arithmetic number, because the mean of its divisors is an integer number (71319512).

Almost surely, 2^213958533 is an apocalyptic number.

It is an amenable number.

213958533 is a deficient number, since it is larger than the sum of its proper divisors (71319515).

213958533 is an equidigital number, since it uses as much as digits as its factorization.

213958533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71319514.

The product of its digits is 97200, while the sum is 39.

The square root of 213958533 is about 14627.3214567808. The cubic root of 213958533 is about 598.1037662536.

The spelling of 213958533 in words is "two hundred thirteen million, nine hundred fifty-eight thousand, five hundred thirty-three".