1331422231 has 2 divisors, whose sum is σ = 1331422232. Its totient is φ = 1331422230.

The previous prime is 1331422217. The next prime is 1331422243. The reversal of 1331422231 is 1322241331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331422231 - 2²⁹ = 794551319 is a prime.

It is a super-2 number, since 2×1331422231² = 3545370314402034722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331422531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665711115 + 665711116.

It is an arithmetic number, because the mean of its divisors is an integer number (665711116).

Almost surely, 2^1331422231 is an apocalyptic number.

1331422231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331422231 is an equidigital number, since it uses as much as digits as its factorization.

1331422231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 1331422231 is about 36488.6589367162. The cubic root of 1331422231 is about 1100.1163047824.

Adding to 1331422231 its reverse (1322241331), we get a palindrome (2653663562).

Subtracting from 1331422231 its reverse (1322241331), we obtain a square (9180900 = 3030²).

The spelling of 1331422231 in words is "one billion, three hundred thirty-one million, four hundred twenty-two thousand, two hundred thirty-one".