3121330103 has 4 divisors (see below), whose sum is σ = 3121472568. Its totient is φ = 3121187640.

The previous prime is 3121330099. The next prime is 3121330109. The reversal of 3121330103 is 3010331213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3010331213 = 8563 ⋅351551.

It is a cyclic number.

It is not a de Polignac number, because 3121330103 - 2² = 3121330099 is a prime.

It is a super-2 number, since 2×3121330103² = 19485403223787981218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121330109) 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, 30668 + ... + 84753.

It is an arithmetic number, because the mean of its divisors is an integer number (780368142).

Almost surely, 2^3121330103 is an apocalyptic number.

3121330103 is a deficient number, since it is larger than the sum of its proper divisors (142465).

3121330103 is a wasteful number, since it uses less digits than its factorization.

3121330103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142464.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 3121330103 is about 55868.8652381628. The cubic root of 3121330103 is about 1461.4363332495.

Adding to 3121330103 its reverse (3010331213), we get a palindrome (6131661316).

It can be divided in two parts, 31213 and 30103, that added together give a palindrome (61316).

The spelling of 3121330103 in words is "three billion, one hundred twenty-one million, three hundred thirty thousand, one hundred three".