3321431231 has 2 divisors, whose sum is σ = 3321431232. Its totient is φ = 3321431230.

The previous prime is 3321431221. The next prime is 3321431291. The reversal of 3321431231 is 1321341233.

It is a weak prime.

It is an emirp because it is prime and its reverse (1321341233) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3321431231 is a prime.

It is a super-2 number, since 2×3321431231² = 22063810844524350722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 3321431197 and 3321431206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3321431221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660715615 + 1660715616.

It is an arithmetic number, because the mean of its divisors is an integer number (1660715616).

Almost surely, 2^3321431231 is an apocalyptic number.

3321431231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3321431231 is an equidigital number, since it uses as much as digits as its factorization.

3321431231 is an evil number, because the sum of its binary digits is even.

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

The square root of 3321431231 is about 57631.8595136405. The cubic root of 3321431231 is about 1492.0215239284.

Adding to 3321431231 its reverse (1321341233), we get a palindrome (4642772464).

The spelling of 3321431231 in words is "three billion, three hundred twenty-one million, four hundred thirty-one thousand, two hundred thirty-one".