1320503253 has 8 divisors (see below), whose sum is σ = 1760901600. Its totient is φ = 880220208.

The previous prime is 1320503231. The next prime is 1320503267. The reversal of 1320503253 is 3523050231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1320503253 - 2¹⁶ = 1320437717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320503453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2883 + ... + 51471.

It is an arithmetic number, because the mean of its divisors is an integer number (220112700).

Almost surely, 2^1320503253 is an apocalyptic number.

It is an amenable number.

1320503253 is a deficient number, since it is larger than the sum of its proper divisors (440398347).

1320503253 is an equidigital number, since it uses as much as digits as its factorization.

1320503253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57651.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 1320503253 is about 36338.7293806484. The cubic root of 1320503253 is about 1097.1006991049.

Adding to 1320503253 its reverse (3523050231), we get a palindrome (4843553484).

The spelling of 1320503253 in words is "one billion, three hundred twenty million, five hundred three thousand, two hundred fifty-three".