213830136 has 48 divisors (see below), whose sum is σ = 623673960. Its totient is φ = 65793600.

The previous prime is 213830117. The next prime is 213830167. The reversal of 213830136 is 631038312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 113290 + ... + 115161.

Almost surely, 2^213830136 is an apocalyptic number.

213830136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

213830136 is an abundant number, since it is smaller than the sum of its proper divisors (409843824).

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

213830136 is a wasteful number, since it uses less digits than its factorization.

213830136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228476 (or 228469 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 213830136 is about 14622.9318537700. The cubic root of 213830136 is about 597.9841011720.

Adding to 213830136 its reverse (631038312), we get a palindrome (844868448).

The spelling of 213830136 in words is "two hundred thirteen million, eight hundred thirty thousand, one hundred thirty-six".