103313123021 has 4 divisors (see below), whose sum is σ = 103610855712. Its totient is φ = 103015390332.

The previous prime is 103313123003. The next prime is 103313123047. The reversal of 103313123021 is 120321313301.

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 a de Polignac number, because none of the positive numbers 2^k-103313123021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103313122984 and 103313123002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103313123051) 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, 148865825 + ... + 148866518.

It is an arithmetic number, because the mean of its divisors is an integer number (25902713928).

Almost surely, 2^103313123021 is an apocalyptic number.

It is an amenable number.

103313123021 is a deficient number, since it is larger than the sum of its proper divisors (297732691).

103313123021 is an equidigital number, since it uses as much as digits as its factorization.

103313123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297732690.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 103313123021 its reverse (120321313301), we get a palindrome (223634436322).

The spelling of 103313123021 in words is "one hundred three billion, three hundred thirteen million, one hundred twenty-three thousand, twenty-one".