1331344231 has 16 divisors (see below), whose sum is σ = 1635701760. Its totient is φ = 1058084640.

The previous prime is 1331344229. The next prime is 1331344253. The reversal of 1331344231 is 1324431331.

It is a cyclic number.

It is not a de Polignac number, because 1331344231 - 2¹ = 1331344229 is a prime.

It is a super-2 number, since 2×1331344231² = 3544954922833962722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331344196 and 1331344205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331344211) 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 15 ways as a sum of consecutive naturals, for example, 100240 + ... + 112741.

It is an arithmetic number, because the mean of its divisors is an integer number (102231360).

Almost surely, 2^1331344231 is an apocalyptic number.

1331344231 is a deficient number, since it is larger than the sum of its proper divisors (304357529).

1331344231 is a wasteful number, since it uses less digits than its factorization.

1331344231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213054.

The product of its digits is 2592, while the sum is 25.

The square root of 1331344231 is about 36487.5900958120. The cubic root of 1331344231 is about 1100.0948213026.

Adding to 1331344231 its reverse (1324431331), we get a palindrome (2655775562).

The spelling of 1331344231 in words is "one billion, three hundred thirty-one million, three hundred forty-four thousand, two hundred thirty-one".