1320534253 has 4 divisors (see below), whose sum is σ = 1320655900. Its totient is φ = 1320412608.

The previous prime is 1320534221. The next prime is 1320534277. The reversal of 1320534253 is 3524350231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1194600969 + 125933284 = 34563^2 + 11222^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320534253 - 2⁵ = 1320534221 is a prime.

It is a super-3 number, since 3×1320534253³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320534203) 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 in 3 ways as a sum of consecutive naturals, for example, 42750 + ... + 66847.

It is an arithmetic number, because the mean of its divisors is an integer number (330163975).

Almost surely, 2^1320534253 is an apocalyptic number.

It is an amenable number.

1320534253 is a deficient number, since it is larger than the sum of its proper divisors (121647).

1320534253 is a wasteful number, since it uses less digits than its factorization.

1320534253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121646.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 1320534253 is about 36339.1559203017. The cubic root of 1320534253 is about 1097.1092841791.

Adding to 1320534253 its reverse (3524350231), we get a palindrome (4844884484).

The spelling of 1320534253 in words is "one billion, three hundred twenty million, five hundred thirty-four thousand, two hundred fifty-three".