3213451421 has 4 divisors (see below), whose sum is σ = 3227243292. Its totient is φ = 3199659552.

The previous prime is 3213451411. The next prime is 3213451433. The reversal of 3213451421 is 1241543123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1241543123 = 1471 ⋅844013.

It can be written as a sum of positive squares in 2 ways, for example, as 1433455321 + 1779996100 = 37861^2 + 42190^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213451421 - 2¹⁰ = 3213450397 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 (3213451411) 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, 6895586 + ... + 6896051.

It is an arithmetic number, because the mean of its divisors is an integer number (806810823).

Almost surely, 2^3213451421 is an apocalyptic number.

It is an amenable number.

3213451421 is a deficient number, since it is larger than the sum of its proper divisors (13791871).

3213451421 is a wasteful number, since it uses less digits than its factorization.

3213451421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13791870.

The product of its digits is 2880, while the sum is 26.

The square root of 3213451421 is about 56687.3126986983. The cubic root of 3213451421 is about 1475.6745237800.

Adding to 3213451421 its reverse (1241543123), we get a palindrome (4454994544).

The spelling of 3213451421 in words is "three billion, two hundred thirteen million, four hundred fifty-one thousand, four hundred twenty-one".