1253331413 has 4 divisors (see below), whose sum is σ = 1272037920. Its totient is φ = 1234624908.

The previous prime is 1253331403. The next prime is 1253331421. The reversal of 1253331413 is 3141333521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1253331413 - 2²⁴ = 1236554197 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 (1253331403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9353153 + ... + 9353286.

It is an arithmetic number, because the mean of its divisors is an integer number (318009480).

Almost surely, 2^1253331413 is an apocalyptic number.

It is an amenable number.

1253331413 is a deficient number, since it is larger than the sum of its proper divisors (18706507).

1253331413 is an equidigital number, since it uses as much as digits as its factorization.

1253331413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18706506.

The product of its digits is 3240, while the sum is 26.

The square root of 1253331413 is about 35402.4210047844. The cubic root of 1253331413 is about 1078.1734710160.

Adding to 1253331413 its reverse (3141333521), we get a palindrome (4394664934).

The spelling of 1253331413 in words is "one billion, two hundred fifty-three million, three hundred thirty-one thousand, four hundred thirteen".