213123010 has 16 divisors (see below), whose sum is σ = 383839416. Its totient is φ = 85200768.

The previous prime is 213122971. The next prime is 213123041. The reversal of 213123010 is 10321312.

It can be written as a sum of positive squares in 4 ways, for example, as 69338929 + 143784081 = 8327^2 + 11991^2 .

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, 16384 + ... + 26356.

Almost surely, 2^213123010 is an apocalyptic number.

213123010 is a deficient number, since it is larger than the sum of its proper divisors (170716406).

213123010 is a wasteful number, since it uses less digits than its factorization.

213123010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12117.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 213123010 is about 14598.7331642167. The cubic root of 213123010 is about 597.3242049779.

Adding to 213123010 its reverse (10321312), we get a palindrome (223444322).

The spelling of 213123010 in words is "two hundred thirteen million, one hundred twenty-three thousand, ten".