1320353253 has 12 divisors (see below), whose sum is σ = 1913274220. Its totient is φ = 877421376.

The previous prime is 1320353213. The next prime is 1320353257. The reversal of 1320353253 is 3523530231.

It can be written as a sum of positive squares in 2 ways, for example, as 530012484 + 790340769 = 23022^2 + 28113^2 .

It is not a de Polignac number, because 1320353253 - 2⁹ = 1320352741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320353257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231538 + ... + 237171.

Almost surely, 2^1320353253 is an apocalyptic number.

It is an amenable number.

1320353253 is a deficient number, since it is larger than the sum of its proper divisors (592920967).

1320353253 is a wasteful number, since it uses less digits than its factorization.

1320353253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469028 (or 469025 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 1320353253 is about 36336.6654083723. The cubic root of 1320353253 is about 1097.0591565248.

Adding to 1320353253 its reverse (3523530231), we get a palindrome (4843883484).

The spelling of 1320353253 in words is "one billion, three hundred twenty million, three hundred fifty-three thousand, two hundred fifty-three".