3123042403213 has 6 divisors (see below), whose sum is σ = 3154269776042. Its totient is φ = 3092121181200.

The previous prime is 3123042403207. The next prime is 3123042403249.

It is a happy number.

3123042403213 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 2785971589129 + 337070814084 = 1669123^2 + 580578^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3123042403213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123042403913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153065106 + ... + 153085507.

Almost surely, 2^{3123042403213} is an apocalyptic number.

It is an amenable number.

3123042403213 is a deficient number, since it is larger than the sum of its proper divisors (31227372829).

3123042403213 is an equidigital number, since it uses as much as digits as its factorization.

3123042403213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306150815 (or 306150714 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The spelling of 3123042403213 in words is "three trillion, one hundred twenty-three billion, forty-two million, four hundred three thousand, two hundred thirteen".