213629533 has 4 divisors (see below), whose sum is σ = 230062588. Its totient is φ = 197196480.

The previous prime is 213629513. The next prime is 213629579. The reversal of 213629533 is 335926312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38278969 + 175350564 = 6187^2 + 13242^2 .

It is a de Polignac number, because none of the positive numbers 2^k-213629533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213629513) 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, 8216508 + ... + 8216533.

It is an arithmetic number, because the mean of its divisors is an integer number (57515647).

Almost surely, 2^213629533 is an apocalyptic number.

It is an amenable number.

213629533 is a deficient number, since it is larger than the sum of its proper divisors (16433055).

213629533 is a wasteful number, since it uses less digits than its factorization.

213629533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16433054.

The product of its digits is 29160, while the sum is 34.

The square root of 213629533 is about 14616.0710520988. The cubic root of 213629533 is about 597.7970446937.

The spelling of 213629533 in words is "two hundred thirteen million, six hundred twenty-nine thousand, five hundred thirty-three".