1331155223 has 2 divisors, whose sum is σ = 1331155224. Its totient is φ = 1331155222.

The previous prime is 1331155207. The next prime is 1331155271. The reversal of 1331155223 is 3225511331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331155223 - 2⁴ = 1331155207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331155192 and 1331155201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331155723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665577611 + 665577612.

It is an arithmetic number, because the mean of its divisors is an integer number (665577612).

Almost surely, 2^1331155223 is an apocalyptic number.

1331155223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331155223 is an equidigital number, since it uses as much as digits as its factorization.

1331155223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 1331155223 is about 36484.9999725915. Note that the first 4 decimals coincide. The cubic root of 1331155223 is about 1100.0427594948.

Adding to 1331155223 its reverse (3225511331), we get a palindrome (4556666554).

The spelling of 1331155223 in words is "one billion, three hundred thirty-one million, one hundred fifty-five thousand, two hundred twenty-three".