213102340 has 24 divisors (see below), whose sum is σ = 488198592. Its totient is φ = 77491680.

The previous prime is 213102319. The next prime is 213102343. The reversal of 213102340 is 43201312.

It is a happy number.

213102340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213102343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484104 + ... + 484543.

It is an arithmetic number, because the mean of its divisors is an integer number (20341608).

Almost surely, 2^213102340 is an apocalyptic number.

213102340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213102340 is an abundant number, since it is smaller than the sum of its proper divisors (275096252).

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

213102340 is a wasteful number, since it uses less digits than its factorization.

213102340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968667 (or 968665 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213102340 is about 14598.0252089110. The cubic root of 213102340 is about 597.3048936101.

Adding to 213102340 its reverse (43201312), we get a palindrome (256303652).

The spelling of 213102340 in words is "two hundred thirteen million, one hundred two thousand, three hundred forty".