213123310 has 16 divisors (see below), whose sum is σ = 383825952. Its totient is φ = 85204000.

The previous prime is 213123301. The next prime is 213123319. The reversal of 213123310 is 13321312.

It is an interprime number because it is at equal distance from previous prime (213123301) and next prime (213123319).

It is a super-2 number, since 2×213123310² = 90843090530712200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213123319) 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, 19335 + ... + 28285.

It is an arithmetic number, because the mean of its divisors is an integer number (23989122).

Almost surely, 2^213123310 is an apocalyptic number.

213123310 is a deficient number, since it is larger than the sum of its proper divisors (170702642).

213123310 is a wasteful number, since it uses less digits than its factorization.

213123310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11339.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213123310 is about 14598.7434390772. The cubic root of 213123310 is about 597.3244852498.

Adding to 213123310 its reverse (13321312), we get a palindrome (226444622).

The spelling of 213123310 in words is "two hundred thirteen million, one hundred twenty-three thousand, three hundred ten".