3121440441213 has 4 divisors (see below), whose sum is σ = 4161920588288. Its totient is φ = 2080960294140.

The previous prime is 3121440441199. The next prime is 3121440441221.

It is a happy number.

3121440441213 is nontrivially palindromic in base 10.

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 not a de Polignac number, because 3121440441213 - 2¹² = 3121440437117 is a prime.

It is a super-2 number, since 2×3121440441213² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121440441233) 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, 520240073533 + ... + 520240073538.

It is an arithmetic number, because the mean of its divisors is an integer number (1040480147072).

Almost surely, 2^{3121440441213} is an apocalyptic number.

It is an amenable number.

3121440441213 is a deficient number, since it is larger than the sum of its proper divisors (1040480147075).

3121440441213 is a wasteful number, since it uses less digits than its factorization.

3121440441213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040480147074.

The product of its (nonzero) digits is 9216, while the sum is 30.

It can be divided in two parts, 3121440 and 441213, that added together give a palindrome (3562653).

The spelling of 3121440441213 in words is "three trillion, one hundred twenty-one billion, four hundred forty million, four hundred forty-one thousand, two hundred thirteen".