212423433013 has 4 divisors (see below), whose sum is σ = 231734654208. Its totient is φ = 193112211820.

The previous prime is 212423432999. The next prime is 212423433023. The reversal of 212423433013 is 310334324212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-212423433013 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 (212423433023) 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, 9655610581 + ... + 9655610602.

It is an arithmetic number, because the mean of its divisors is an integer number (57933663552).

Almost surely, 2^212423433013 is an apocalyptic number.

It is an amenable number.

212423433013 is a deficient number, since it is larger than the sum of its proper divisors (19311221195).

212423433013 is a wasteful number, since it uses less digits than its factorization.

212423433013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19311221194.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 212423433013 its reverse (310334324212), we get a palindrome (522757757225).

The spelling of 212423433013 in words is "two hundred twelve billion, four hundred twenty-three million, four hundred thirty-three thousand, thirteen".