3213213431 has 4 divisors (see below), whose sum is σ = 3213955272. Its totient is φ = 3212471592.

The previous prime is 3213213389. The next prime is 3213213449. The reversal of 3213213431 is 1343123123.

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 3213213431 - 2²⁶ = 3146104567 is a prime.

It is a super-2 number, since 2×3213213431² = 20649481106317583522, 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 = 3213213397 and 3213213406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213213131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364385 + ... + 373098.

It is an arithmetic number, because the mean of its divisors is an integer number (803488818).

Almost surely, 2^3213213431 is an apocalyptic number.

3213213431 is a deficient number, since it is larger than the sum of its proper divisors (741841).

3213213431 is an equidigital number, since it uses as much as digits as its factorization.

3213213431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741840.

The product of its digits is 1296, while the sum is 23.

The square root of 3213213431 is about 56685.2135128730. The cubic root of 3213213431 is about 1475.6380931218.

Adding to 3213213431 its reverse (1343123123), we get a palindrome (4556336554).

The spelling of 3213213431 in words is "three billion, two hundred thirteen million, two hundred thirteen thousand, four hundred thirty-one".