3213431455421 has 16 divisors (see below), whose sum is σ = 3510270380160. Its totient is φ = 2917379969280.

The previous prime is 3213431455411. The next prime is 3213431455471. The reversal of 3213431455421 is 1245541343123.

It is a cyclic number.

It is not a de Polignac number, because 3213431455421 - 2¹⁴ = 3213431439037 is a prime.

It is a super-2 number, since 2×3213431455421² (a number of 26 digits) 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 (3213431455411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24851825 + ... + 24980793.

It is an arithmetic number, because the mean of its divisors is an integer number (219391898760).

Almost surely, 2^{3213431455421} is an apocalyptic number.

It is an amenable number.

3213431455421 is a deficient number, since it is larger than the sum of its proper divisors (296838924739).

3213431455421 is a wasteful number, since it uses less digits than its factorization.

3213431455421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132004.

The product of its digits is 172800, while the sum is 38.

Adding to 3213431455421 its reverse (1245541343123), we get a palindrome (4458972798544).

The spelling of 3213431455421 in words is "three trillion, two hundred thirteen billion, four hundred thirty-one million, four hundred fifty-five thousand, four hundred twenty-one".