3231031213 has 4 divisors (see below), whose sum is σ = 3249707868. Its totient is φ = 3212354560.

The previous prime is 3231031211. The next prime is 3231031229. The reversal of 3231031213 is 3121301323.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2181076804 + 1049954409 = 46702^2 + 32403^2 .

It is a cyclic number.

It is not a de Polignac number, because 3231031213 - 2¹ = 3231031211 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 (3231031211) 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, 9338068 + ... + 9338413.

It is an arithmetic number, because the mean of its divisors is an integer number (812426967).

Almost surely, 2^3231031213 is an apocalyptic number.

It is an amenable number.

3231031213 is a deficient number, since it is larger than the sum of its proper divisors (18676655).

3231031213 is a wasteful number, since it uses less digits than its factorization.

3231031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18676654.

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

The square root of 3231031213 is about 56842.1605236817. The cubic root of 3231031213 is about 1478.3606167156.

Adding to 3231031213 its reverse (3121301323), we get a palindrome (6352332536).

The spelling of 3231031213 in words is "three billion, two hundred thirty-one million, thirty-one thousand, two hundred thirteen".