3123040403213 has 4 divisors (see below), whose sum is σ = 3123217896540. Its totient is φ = 3122862909888.

The previous prime is 3123040403179. The next prime is 3123040403239.

3123040403213 is nontrivially palindromic in base 10.

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 1058238091849 + 2064802311364 = 1028707^2 + 1436942^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123040403213 - 2⁸ = 3123040402957 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 (3123040400213) 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, 88720268 + ... + 88755461.

It is an arithmetic number, because the mean of its divisors is an integer number (780804474135).

Almost surely, 2^{3123040403213} is an apocalyptic number.

It is an amenable number.

3123040403213 is a deficient number, since it is larger than the sum of its proper divisors (177493327).

3123040403213 is a wasteful number, since it uses less digits than its factorization.

3123040403213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177493326.

The product of its (nonzero) digits is 5184, while the sum is 26.

It can be divided in two parts, 3123040 and 403213, that added together give a palindrome (3526253).

The spelling of 3123040403213 in words is "three trillion, one hundred twenty-three billion, forty million, four hundred three thousand, two hundred thirteen".