3126123013 has 16 divisors (see below), whose sum is σ = 3599948016. Its totient is φ = 2688998400.

The previous prime is 3126123001. The next prime is 3126123017. The reversal of 3126123013 is 3103216213.

It can be written as a sum of positive squares in 8 ways, for example, as 52751169 + 3073371844 = 7263^2 + 55438^2 .

It is a cyclic number.

It is not a de Polignac number, because 3126123013 - 2⁵ = 3126122981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3126123017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47706 + ... + 92347.

It is an arithmetic number, because the mean of its divisors is an integer number (224996751).

Almost surely, 2^3126123013 is an apocalyptic number.

It is an amenable number.

3126123013 is a deficient number, since it is larger than the sum of its proper divisors (473825003).

3126123013 is a wasteful number, since it uses less digits than its factorization.

3126123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140184.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 3126123013 is about 55911.7430688760. The cubic root of 3126123013 is about 1462.1839793284.

Adding to 3126123013 its reverse (3103216213), we get a palindrome (6229339226).

The spelling of 3126123013 in words is "three billion, one hundred twenty-six million, one hundred twenty-three thousand, thirteen".