1351240253 has 16 divisors (see below), whose sum is σ = 1501839360. Its totient is φ = 1205458800.

The previous prime is 1351240237. The next prime is 1351240273. The reversal of 1351240253 is 3520421531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1351240253 - 2⁴ = 1351240237 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 (1351240273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140468 + ... + 149778.

It is an arithmetic number, because the mean of its divisors is an integer number (93864960).

Almost surely, 2^1351240253 is an apocalyptic number.

It is an amenable number.

1351240253 is a deficient number, since it is larger than the sum of its proper divisors (150599107).

1351240253 is a wasteful number, since it uses less digits than its factorization.

1351240253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9568.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1351240253 is about 36759.2199726817. The cubic root of 1351240253 is about 1105.5478001553.

Adding to 1351240253 its reverse (3520421531), we get a palindrome (4871661784).

The spelling of 1351240253 in words is "one billion, three hundred fifty-one million, two hundred forty thousand, two hundred fifty-three".