212430354023 has 4 divisors (see below), whose sum is σ = 212818709880. Its totient is φ = 212041998168.

The previous prime is 212430353969. The next prime is 212430354053. The reversal of 212430354023 is 320453034212.

It is a happy number.

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 212430354023 - 2²⁰ = 212429305447 is a prime.

It is a super-2 number, since 2×212430354023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212430354053) 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, 194177108 + ... + 194178201.

It is an arithmetic number, because the mean of its divisors is an integer number (53204677470).

Almost surely, 2^212430354023 is an apocalyptic number.

212430354023 is a deficient number, since it is larger than the sum of its proper divisors (388355857).

212430354023 is an equidigital number, since it uses as much as digits as its factorization.

212430354023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388355856.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 212430354023 its reverse (320453034212), we get a palindrome (532883388235).

The spelling of 212430354023 in words is "two hundred twelve billion, four hundred thirty million, three hundred fifty-four thousand, twenty-three".