1321023527 has 2 divisors, whose sum is σ = 1321023528. Its totient is φ = 1321023526.

The previous prime is 1321023521. The next prime is 1321023547. The reversal of 1321023527 is 7253201231.

It is a weak prime.

It is an emirp because it is prime and its reverse (7253201231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321023527 - 2⁸ = 1321023271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321023496 and 1321023505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321023521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660511763 + 660511764.

It is an arithmetic number, because the mean of its divisors is an integer number (660511764).

Almost surely, 2^1321023527 is an apocalyptic number.

1321023527 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321023527 is an equidigital number, since it uses as much as digits as its factorization.

1321023527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1321023527 is about 36345.8873464385. The cubic root of 1321023527 is about 1097.2447648921.

Adding to 1321023527 its reverse (7253201231), we get a palindrome (8574224758).

The spelling of 1321023527 in words is "one billion, three hundred twenty-one million, twenty-three thousand, five hundred twenty-seven".