212423015 has 16 divisors (see below), whose sum is σ = 294000960. Its totient is φ = 144322560.

The previous prime is 212422981. The next prime is 212423017. The reversal of 212423015 is 510324212.

212423015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212423015 - 2⁸ = 212422759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212423017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24026 + ... + 31655.

It is an arithmetic number, because the mean of its divisors is an integer number (18375060).

Almost surely, 2^212423015 is an apocalyptic number.

212423015 is a deficient number, since it is larger than the sum of its proper divisors (81577945).

212423015 is a wasteful number, since it uses less digits than its factorization.

212423015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55802.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 212423015 is about 14574.7389341971. The cubic root of 212423015 is about 596.6695242764.

Adding to 212423015 its reverse (510324212), we get a palindrome (722747227).

The spelling of 212423015 in words is "two hundred twelve million, four hundred twenty-three thousand, fifteen".