212440304023 has 16 divisors (see below), whose sum is σ = 222894090496. Its totient is φ = 202226699520.

The previous prime is 212440303987. The next prime is 212440304053. The reversal of 212440304023 is 320403044212.

It is a happy number.

It is not a de Polignac number, because 212440304023 - 2⁹ = 212440303511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212440304053) 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, 718261 + ... + 969937.

It is an arithmetic number, because the mean of its divisors is an integer number (13930880656).

Almost surely, 2^212440304023 is an apocalyptic number.

212440304023 is a deficient number, since it is larger than the sum of its proper divisors (10453786473).

212440304023 is a wasteful number, since it uses less digits than its factorization.

212440304023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252154.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 212440304023 its reverse (320403044212), we get a palindrome (532843348235).

The spelling of 212440304023 in words is "two hundred twelve billion, four hundred forty million, three hundred four thousand, twenty-three".