212131310 has 16 divisors (see below), whose sum is σ = 385618752. Its totient is φ = 84012000.

The previous prime is 212131307. The next prime is 212131319. The reversal of 212131310 is 13131212.

It is a super-2 number, since 2×212131310² = 89999385364632200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212131319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104006 + ... + 106025.

It is an arithmetic number, because the mean of its divisors is an integer number (24101172).

Almost surely, 2^212131310 is an apocalyptic number.

212131310 is a deficient number, since it is larger than the sum of its proper divisors (173487442).

212131310 is a wasteful number, since it uses less digits than its factorization.

212131310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210139.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 212131310 is about 14564.7282844549. The cubic root of 212131310 is about 596.3962782800.

Adding to 212131310 its reverse (13131212), we get a palindrome (225262522).

The spelling of 212131310 in words is "two hundred twelve million, one hundred thirty-one thousand, three hundred ten".