212303444 has 12 divisors (see below), whose sum is σ = 372052800. Its totient is φ = 106002648.

The previous prime is 212303437. The next prime is 212303449. The reversal of 212303444 is 444303212.

It is a super-2 number, since 2×212303444² = 90145504668522272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34034 + ... + 39785.

It is an arithmetic number, because the mean of its divisors is an integer number (31004400).

Almost surely, 2^212303444 is an apocalyptic number.

It is an amenable number.

212303444 is a deficient number, since it is larger than the sum of its proper divisors (159749356).

212303444 is a wasteful number, since it uses less digits than its factorization.

212303444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74542 (or 74540 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 212303444 is about 14570.6363622184. The cubic root of 212303444 is about 596.5575499654.

Adding to 212303444 its reverse (444303212), we get a palindrome (656606656).

The spelling of 212303444 in words is "two hundred twelve million, three hundred three thousand, four hundred forty-four".