621231748903 has 8 divisors (see below), whose sum is σ = 653940241200. Its totient is φ = 588524465088.

The previous prime is 621231748889. The next prime is 621231748927. The reversal of 621231748903 is 309847132126.

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

It is a cyclic number.

It is not a de Polignac number, because 621231748903 - 2⁵ = 621231748871 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 (621231748003) 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 7 ways as a sum of consecutive naturals, for example, 869625 + ... + 1413757.

It is an arithmetic number, because the mean of its divisors is an integer number (81742530150).

Almost surely, 2^621231748903 is an apocalyptic number.

621231748903 is a deficient number, since it is larger than the sum of its proper divisors (32708492297).

621231748903 is a wasteful number, since it uses less digits than its factorization.

621231748903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604241.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 621231748903 in words is "six hundred twenty-one billion, two hundred thirty-one million, seven hundred forty-eight thousand, nine hundred three".