213429885 has 32 divisors (see below), whose sum is σ = 353989632. Its totient is φ = 109693440.

The previous prime is 213429877. The next prime is 213429889. The reversal of 213429885 is 588924312.

It is not a de Polignac number, because 213429885 - 2³ = 213429877 is a prime.

It is a super-2 number, since 2×213429885² = 91104631622226450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213429889) 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 31 ways as a sum of consecutive naturals, for example, 127977 + ... + 129633.

It is an arithmetic number, because the mean of its divisors is an integer number (11062176).

Almost surely, 2^213429885 is an apocalyptic number.

It is an amenable number.

213429885 is a deficient number, since it is larger than the sum of its proper divisors (140559747).

213429885 is a wasteful number, since it uses less digits than its factorization.

213429885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973.

The product of its digits is 138240, while the sum is 42.

The square root of 213429885 is about 14609.2397132773. The cubic root of 213429885 is about 597.6107624238.

The spelling of 213429885 in words is "two hundred thirteen million, four hundred twenty-nine thousand, eight hundred eighty-five".