3405121331 has 4 divisors (see below), whose sum is σ = 3414106200. Its totient is φ = 3396136464.

The previous prime is 3405121303. The next prime is 3405121337. The reversal of 3405121331 is 1331215043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3405121331 - 2²⁶ = 3338012467 is a prime.

It is a super-2 number, since 2×3405121331² = 23189702557662423122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3405121297 and 3405121306.

It is not an unprimeable number, because it can be changed into a prime (3405121337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4491866 + ... + 4492623.

It is an arithmetic number, because the mean of its divisors is an integer number (853526550).

Almost surely, 2^3405121331 is an apocalyptic number.

3405121331 is a deficient number, since it is larger than the sum of its proper divisors (8984869).

3405121331 is an equidigital number, since it uses as much as digits as its factorization.

3405121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984868.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 3405121331 is about 58353.4174749003. The cubic root of 3405121331 is about 1504.4492093833.

Adding to 3405121331 its reverse (1331215043), we get a palindrome (4736336374).

The spelling of 3405121331 in words is "three billion, four hundred five million, one hundred twenty-one thousand, three hundred thirty-one".