103312303021 has 4 divisors (see below), whose sum is σ = 103316126944. Its totient is φ = 103308479100.

The previous prime is 103312303019. The next prime is 103312303043. The reversal of 103312303021 is 120303213301.

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.

It is a cyclic number.

It is not a de Polignac number, because 103312303021 - 2¹ = 103312303019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103312303021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103312303001) 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, 1871145 + ... + 1925566.

It is an arithmetic number, because the mean of its divisors is an integer number (25829031736).

Almost surely, 2^103312303021 is an apocalyptic number.

It is an amenable number.

103312303021 is a deficient number, since it is larger than the sum of its proper divisors (3823923).

103312303021 is an equidigital number, since it uses as much as digits as its factorization.

103312303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823922.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 103312303021 its reverse (120303213301), we get a palindrome (223615516322).

The spelling of 103312303021 in words is "one hundred three billion, three hundred twelve million, three hundred three thousand, twenty-one".