1331230031 has 2 divisors, whose sum is σ = 1331230032. Its totient is φ = 1331230030.

The previous prime is 1331230013. The next prime is 1331230051. The reversal of 1331230031 is 1300321331.

Together with previous prime (1331230013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (1300321331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331230031 - 2¹⁴ = 1331213647 is a prime.

It is a super-2 number, since 2×1331230031² = 3544346790872521922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331229991 and 1331230009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331230051) 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 as a sum of consecutive naturals, namely, 665615015 + 665615016.

It is an arithmetic number, because the mean of its divisors is an integer number (665615016).

Almost surely, 2^1331230031 is an apocalyptic number.

1331230031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331230031 is an equidigital number, since it uses as much as digits as its factorization.

1331230031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1331230031 is about 36486.0251466229. The cubic root of 1331230031 is about 1100.0633657712.

Adding to 1331230031 its reverse (1300321331), we get a palindrome (2631551362).

The spelling of 1331230031 in words is "one billion, three hundred thirty-one million, two hundred thirty thousand, thirty-one".