621231544043103 has 32 divisors (see below), whose sum is σ = 972180793589760. Its totient is φ = 345495500580960.

The previous prime is 621231544043069. The next prime is 621231544043269. The reversal of 621231544043103 is 301340445132126.

It is not a de Polignac number, because 621231544043103 - 2⁶ = 621231544043039 is a prime.

It is a super-3 number, since 3×621231544043103³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621231544063103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1757962783 + ... + 1758316128.

It is an arithmetic number, because the mean of its divisors is an integer number (30380649799680).

Almost surely, 2^{621231544043103} is an apocalyptic number.

621231544043103 is a deficient number, since it is larger than the sum of its proper divisors (350949249546657).

621231544043103 is a wasteful number, since it uses less digits than its factorization.

621231544043103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516279147.

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 621231544043103 its reverse (301340445132126), we get a palindrome (922571989175229).

The spelling of 621231544043103 in words is "six hundred twenty-one trillion, two hundred thirty-one billion, five hundred forty-four million, forty-three thousand, one hundred three".