3213012331 has 4 divisors (see below), whose sum is σ = 3287733592. Its totient is φ = 3138291072.

The previous prime is 3213012323. The next prime is 3213012343. The reversal of 3213012331 is 1332103123.

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 3213012331 - 2³ = 3213012323 is a prime.

It is a super-2 number, since 2×3213012331² = 20646896478316107122, 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 = 3213012299 and 3213012308.

It is not an unprimeable number, because it can be changed into a prime (3213052331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37360566 + ... + 37360651.

It is an arithmetic number, because the mean of its divisors is an integer number (821933398).

Almost surely, 2^3213012331 is an apocalyptic number.

3213012331 is a deficient number, since it is larger than the sum of its proper divisors (74721261).

3213012331 is an equidigital number, since it uses as much as digits as its factorization.

3213012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74721260.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 3213012331 is about 56683.4396539236. The cubic root of 3213012331 is about 1475.6073080508.

Adding to 3213012331 its reverse (1332103123), we get a palindrome (4545115454).

The spelling of 3213012331 in words is "three billion, two hundred thirteen million, twelve thousand, three hundred thirty-one".