621243203 has 8 divisors (see below), whose sum is σ = 710181120. Its totient is φ = 532352520.

The previous prime is 621243197. The next prime is 621243239. The reversal of 621243203 is 302342126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 621243203 - 2⁴ = 621243187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621243803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23378 + ... + 42296.

It is an arithmetic number, because the mean of its divisors is an integer number (88772640).

Almost surely, 2^621243203 is an apocalyptic number.

621243203 is a deficient number, since it is larger than the sum of its proper divisors (88937917).

621243203 is a wasteful number, since it uses less digits than its factorization.

621243203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23617.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 621243203 is about 24924.7508111917. The cubic root of 621243203 is about 853.2714541345.

Adding to 621243203 its reverse (302342126), we get a palindrome (923585329).

The spelling of 621243203 in words is "six hundred twenty-one million, two hundred forty-three thousand, two hundred three".