212161310 has 16 divisors (see below), whose sum is σ = 385829136. Its totient is φ = 83989248.

The previous prime is 212161297. The next prime is 212161321. The reversal of 212161310 is 13161212.

212161310 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212161310² = 90024842921832200, which contains 22 as substring.

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, 108392 + ... + 110331.

It is an arithmetic number, because the mean of its divisors is an integer number (24114321).

Almost surely, 2^212161310 is an apocalyptic number.

212161310 is a deficient number, since it is larger than the sum of its proper divisors (173667826).

212161310 is a wasteful number, since it uses less digits than its factorization.

212161310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218827.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 212161310 is about 14565.7581333757. The cubic root of 212161310 is about 596.4243914410.

The spelling of 212161310 in words is "two hundred twelve million, one hundred sixty-one thousand, three hundred ten".