213405132 has 24 divisors (see below), whose sum is σ = 519595776. Its totient is φ = 68042128.

The previous prime is 213405121. The next prime is 213405161. The reversal of 213405132 is 231504312.

213405132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213405099 and 213405108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386328 + ... + 386879.

It is an arithmetic number, because the mean of its divisors is an integer number (21649824).

Almost surely, 2^213405132 is an apocalyptic number.

It is an amenable number.

213405132 is an abundant number, since it is smaller than the sum of its proper divisors (306190644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213405132 is a wasteful number, since it uses less digits than its factorization.

213405132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773237 (or 773235 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 213405132 is about 14608.3925193705. The cubic root of 213405132 is about 597.5876584567.

Adding to 213405132 its reverse (231504312), we get a palindrome (444909444).

The spelling of 213405132 in words is "two hundred thirteen million, four hundred five thousand, one hundred thirty-two".