103251326621 has 4 divisors (see below), whose sum is σ = 104495318592. Its totient is φ = 102007334652.

The previous prime is 103251326603. The next prime is 103251326657. The reversal of 103251326621 is 126623152301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126623152301 = 7603 ⋅16654367.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103251326621 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 (103251326671) 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, 621995861 + ... + 621996026.

It is an arithmetic number, because the mean of its divisors is an integer number (26123829648).

Almost surely, 2^103251326621 is an apocalyptic number.

It is an amenable number.

103251326621 is a deficient number, since it is larger than the sum of its proper divisors (1243991971).

103251326621 is an equidigital number, since it uses as much as digits as its factorization.

103251326621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243991970.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 103251326621 its reverse (126623152301), we get a palindrome (229874478922).

The spelling of 103251326621 in words is "one hundred three billion, two hundred fifty-one million, three hundred twenty-six thousand, six hundred twenty-one".