212504023 has 4 divisors (see below), whose sum is σ = 212854720. Its totient is φ = 212153328.

The previous prime is 212504009. The next prime is 212504027. The reversal of 212504023 is 320405212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212504023 - 2¹³ = 212495831 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 (212504027) 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, 174438 + ... + 175651.

It is an arithmetic number, because the mean of its divisors is an integer number (53213680).

Almost surely, 2^212504023 is an apocalyptic number.

212504023 is a deficient number, since it is larger than the sum of its proper divisors (350697).

212504023 is an equidigital number, since it uses as much as digits as its factorization.

212504023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350696.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 212504023 is about 14577.5177242218. The cubic root of 212504023 is about 596.7453617304.

Adding to 212504023 its reverse (320405212), we get a palindrome (532909235).

The spelling of 212504023 in words is "two hundred twelve million, five hundred four thousand, twenty-three".