3121534220413 has 4 divisors (see below), whose sum is σ = 3567467680480. Its totient is φ = 2675600760348.

The previous prime is 3121534220317. The next prime is 3121534220419. The reversal of 3121534220413 is 3140224351213.

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 a cyclic number.

It is not a de Polignac number, because 3121534220413 - 2⁴¹ = 922510964861 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 (3121534220419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222966730023 + ... + 222966730036.

It is an arithmetic number, because the mean of its divisors is an integer number (891866920120).

Almost surely, 2^{3121534220413} is an apocalyptic number.

It is an amenable number.

3121534220413 is a deficient number, since it is larger than the sum of its proper divisors (445933460067).

3121534220413 is an equidigital number, since it uses as much as digits as its factorization.

3121534220413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445933460066.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 3121534220413 its reverse (3140224351213), we get a palindrome (6261758571626).

The spelling of 3121534220413 in words is "three trillion, one hundred twenty-one billion, five hundred thirty-four million, two hundred twenty thousand, four hundred thirteen".