213343501 has 6 divisors (see below), whose sum is σ = 248175150. Its totient is φ = 182865816.

The previous prime is 213343483. The next prime is 213343513. The reversal of 213343501 is 105343312.

It can be written as a sum of positive squares in only one way, i.e., 213014025 + 329476 = 14595^2 + 574^2 .

It is not a de Polignac number, because 213343501 - 2¹⁵ = 213310733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213343531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2176926 + ... + 2177023.

It is an arithmetic number, because the mean of its divisors is an integer number (41362525).

Almost surely, 2^213343501 is an apocalyptic number.

It is an amenable number.

213343501 is a deficient number, since it is larger than the sum of its proper divisors (34831649).

213343501 is an equidigital number, since it uses as much as digits as its factorization.

213343501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353963 (or 4353956 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 213343501 is about 14606.2829289316. The cubic root of 213343501 is about 597.5301255213.

Adding to 213343501 its reverse (105343312), we get a palindrome (318686813).

The spelling of 213343501 in words is "two hundred thirteen million, three hundred forty-three thousand, five hundred one".