3120012013 has 4 divisors (see below), whose sum is σ = 3204336700. Its totient is φ = 3035687328.

The previous prime is 3120012011. The next prime is 3120012029. The reversal of 3120012013 is 3102100213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2897345929 + 222666084 = 53827^2 + 14922^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120012013 - 2¹ = 3120012011 is a prime.

It is a super-2 number, since 2×3120012013² = 19468949922528624338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120011984 and 3120012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120012011) 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, 42162288 + ... + 42162361.

It is an arithmetic number, because the mean of its divisors is an integer number (801084175).

Almost surely, 2^3120012013 is an apocalyptic number.

It is an amenable number.

3120012013 is a deficient number, since it is larger than the sum of its proper divisors (84324687).

3120012013 is an equidigital number, since it uses as much as digits as its factorization.

3120012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84324686.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 3120012013 is about 55857.0677085720. The cubic root of 3120012013 is about 1461.2305902098.

Adding to 3120012013 its reverse (3102100213), we get a palindrome (6222112226).

The spelling of 3120012013 in words is "three billion, one hundred twenty million, twelve thousand, thirteen".