213415340 has 48 divisors (see below), whose sum is σ = 456382080. Its totient is φ = 83815680.

The previous prime is 213415339. The next prime is 213415343. The reversal of 213415340 is 43514312.

It is a super-2 number, since 2×213415340² = 91092214694631200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213415343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462710 + ... + 463170.

It is an arithmetic number, because the mean of its divisors is an integer number (9507960).

Almost surely, 2^213415340 is an apocalyptic number.

213415340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213415340 is an abundant number, since it is smaller than the sum of its proper divisors (242966740).

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

213415340 is a wasteful number, since it uses less digits than its factorization.

213415340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 213415340 is about 14608.7419033947. The cubic root of 213415340 is about 597.5971866211.

Adding to 213415340 its reverse (43514312), we get a palindrome (256929652).

The spelling of 213415340 in words is "two hundred thirteen million, four hundred fifteen thousand, three hundred forty".