213421310 has 16 divisors (see below), whose sum is σ = 390457152. Its totient is φ = 83968800.

The previous prime is 213421261. The next prime is 213421321. The reversal of 213421310 is 13124312.

It is a super-2 number, since 2×213421310² = 91097311124232200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174326 + ... + 175545.

It is an arithmetic number, because the mean of its divisors is an integer number (24403572).

Almost surely, 2^213421310 is an apocalyptic number.

213421310 is a deficient number, since it is larger than the sum of its proper divisors (177035842).

213421310 is a wasteful number, since it uses less digits than its factorization.

213421310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349939.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 213421310 is about 14608.9462316760. The cubic root of 213421310 is about 597.6027588884.

Adding to 213421310 its reverse (13124312), we get a palindrome (226545622).

The spelling of 213421310 in words is "two hundred thirteen million, four hundred twenty-one thousand, three hundred ten".