3123133513 has 4 divisors (see below), whose sum is σ = 3135576528. Its totient is φ = 3110690500.

The previous prime is 3123133501. The next prime is 3123133537. The reversal of 3123133513 is 3153313213.

3123133513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3123133513 - 2¹³ = 3123125321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123133583) 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, 6221131 + ... + 6221632.

It is an arithmetic number, because the mean of its divisors is an integer number (783894132).

Almost surely, 2^3123133513 is an apocalyptic number.

It is an amenable number.

3123133513 is a deficient number, since it is larger than the sum of its proper divisors (12443015).

3123133513 is a wasteful number, since it uses less digits than its factorization.

3123133513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12443014.

The product of its digits is 2430, while the sum is 25.

The square root of 3123133513 is about 55885.0025767200. The cubic root of 3123133513 is about 1461.7177369449.

Adding to 3123133513 its reverse (3153313213), we get a palindrome (6276446726).

The spelling of 3123133513 in words is "three billion, one hundred twenty-three million, one hundred thirty-three thousand, five hundred thirteen".