3121342423405 has 8 divisors (see below), whose sum is σ = 3746330004600. Its totient is φ = 2496594541056.

The previous prime is 3121342423393. The next prime is 3121342423429. The reversal of 3121342423405 is 5043242431213.

It can be written as a sum of positive squares in 4 ways, for example, as 1687704979689 + 1433637443716 = 1299117^2 + 1197346^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3121342423405 - 2²⁵ = 3121308868973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59896060 + ... + 59948149.

It is an arithmetic number, because the mean of its divisors is an integer number (468291250575).

Almost surely, 2^{3121342423405} is an apocalyptic number.

It is an amenable number.

3121342423405 is a deficient number, since it is larger than the sum of its proper divisors (624987581195).

3121342423405 is a wasteful number, since it uses less digits than its factorization.

3121342423405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119849423.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 3121342423405 its reverse (5043242431213), we get a palindrome (8164584854618).

The spelling of 3121342423405 in words is "three trillion, one hundred twenty-one billion, three hundred forty-two million, four hundred twenty-three thousand, four hundred five".