3121212341 has 8 divisors (see below), whose sum is σ = 3363310104. Its totient is φ = 2879400960.

The previous prime is 3121212329. The next prime is 3121212349. The reversal of 3121212341 is 1432121213.

It can be written as a sum of positive squares in 4 ways, for example, as 970571716 + 2150640625 = 31154^2 + 46375^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121212341 is a prime.

It is a super-2 number, since 2×3121212341² = 19483932955221400562, which 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 (3121212349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48680 + ... + 92801.

It is an arithmetic number, because the mean of its divisors is an integer number (420413763).

Almost surely, 2^3121212341 is an apocalyptic number.

It is an amenable number.

3121212341 is a deficient number, since it is larger than the sum of its proper divisors (242097763).

3121212341 is a wasteful number, since it uses less digits than its factorization.

3121212341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143191.

The product of its digits is 288, while the sum is 20.

The square root of 3121212341 is about 55867.8113138505. The cubic root of 3121212341 is about 1461.4179539235.

Adding to 3121212341 its reverse (1432121213), we get a palindrome (4553333554).

The spelling of 3121212341 in words is "three billion, one hundred twenty-one million, two hundred twelve thousand, three hundred forty-one".