34121213513 has 4 divisors (see below), whose sum is σ = 34123086228. Its totient is φ = 34119340800.

The previous prime is 34121213491. The next prime is 34121213531. The reversal of 34121213513 is 31531212143.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31531212143 = 53 ⋅594928531.

It can be written as a sum of positive squares in 2 ways, for example, as 22381057609 + 11740155904 = 149603^2 + 108352^2 .

It is a cyclic number.

It is not a de Polignac number, because 34121213513 - 2⁸ = 34121213257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34121212513) 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, 908756 + ... + 945557.

It is an arithmetic number, because the mean of its divisors is an integer number (8530771557).

Almost surely, 2^34121213513 is an apocalyptic number.

It is an amenable number.

34121213513 is a deficient number, since it is larger than the sum of its proper divisors (1872715).

34121213513 is a wasteful number, since it uses less digits than its factorization.

34121213513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872714.

The product of its digits is 2160, while the sum is 26.

Adding to 34121213513 its reverse (31531212143), we get a palindrome (65652425656).

The spelling of 34121213513 in words is "thirty-four billion, one hundred twenty-one million, two hundred thirteen thousand, five hundred thirteen".