623400241213 has 4 divisors (see below), whose sum is σ = 623424006108. Its totient is φ = 623376476320.

The previous prime is 623400241183. The next prime is 623400241223. The reversal of 623400241213 is 312142004326.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 310206669444 + 313193571769 = 556962^2 + 559637^2 .

It is a cyclic number.

It is not a de Polignac number, because 623400241213 - 2²⁵ = 623366686781 is a prime.

It is a super-2 number, since 2×623400241213² (a number of 24 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 (623400241223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11843056 + ... + 11895577.

It is an arithmetic number, because the mean of its divisors is an integer number (155856001527).

Almost surely, 2^623400241213 is an apocalyptic number.

It is an amenable number.

623400241213 is a deficient number, since it is larger than the sum of its proper divisors (23764895).

623400241213 is a wasteful number, since it uses less digits than its factorization.

623400241213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23764894.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 623400241213 its reverse (312142004326), we get a palindrome (935542245539).

The spelling of 623400241213 in words is "six hundred twenty-three billion, four hundred million, two hundred forty-one thousand, two hundred thirteen".