1331023 has 2 divisors, whose sum is σ = 1331024. Its totient is φ = 1331022.

The previous prime is 1330997. The next prime is 1331039. The reversal of 1331023 is 3201331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331023 - 2¹³ = 1322831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1330994 and 1331012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665511 + 665512.

It is an arithmetic number, because the mean of its divisors is an integer number (665512).

2^1331023 is an apocalyptic number.

1331023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331023 is an equidigital number, since it uses as much as digits as its factorization.

1331023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 1331023 is about 1153.6997009621. The cubic root of 1331023 is about 110.0006336052. Note that the first 3 decimals are identical.

Adding to 1331023 its reverse (3201331), we get a palindrome (4532354).

It can be divided in two parts, 133 and 1023, that added together give a square (1156 = 34²).

The spelling of 1331023 in words is "one million, three hundred thirty-one thousand, twenty-three".