4312121013 has 12 divisors (see below), whose sum is σ = 6263033868. Its totient is φ = 2858863680.

The previous prime is 4312120993. The next prime is 4312121039. The reversal of 4312121013 is 3101212134.

4312121013 is a `hidden beast` number, since 431 + 21 + 210 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 559700964 + 3752420049 = 23658^2 + 61257^2 .

It is not a de Polignac number, because 4312121013 - 2⁶ = 4312120949 is a prime.

It is a super-2 number, since 2×4312121013² = 37188775261512292338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4312121083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1321920 + ... + 1325177.

It is an arithmetic number, because the mean of its divisors is an integer number (521919489).

Almost surely, 2^4312121013 is an apocalyptic number.

It is an amenable number.

4312121013 is a deficient number, since it is larger than the sum of its proper divisors (1950912855).

4312121013 is a wasteful number, since it uses less digits than its factorization.

4312121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647284 (or 2647281 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 4312121013 is about 65666.7420617164. The cubic root of 4312121013 is about 1627.6598349397.

Adding to 4312121013 its reverse (3101212134), we get a palindrome (7413333147).

The spelling of 4312121013 in words is "four billion, three hundred twelve million, one hundred twenty-one thousand, thirteen".