213303501 has 24 divisors (see below), whose sum is σ = 312215904. Its totient is φ = 140318880.

The previous prime is 213303491. The next prime is 213303509. The reversal of 213303501 is 105303312.

213303501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213303501 - 2⁵ = 213303469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213303509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267235 + ... + 268031.

It is an arithmetic number, because the mean of its divisors is an integer number (13008996).

Almost surely, 2^213303501 is an apocalyptic number.

It is an amenable number.

213303501 is a deficient number, since it is larger than the sum of its proper divisors (98912403).

213303501 is a wasteful number, since it uses less digits than its factorization.

213303501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 213303501 is about 14604.9135909803. The cubic root of 213303501 is about 597.4927793342.

Adding to 213303501 its reverse (105303312), we get a palindrome (318606813).

The spelling of 213303501 in words is "two hundred thirteen million, three hundred three thousand, five hundred one".