1311125253 has 16 divisors (see below), whose sum is σ = 1805991936. Its totient is φ = 845215920.

The previous prime is 1311125237. The next prime is 1311125261. The reversal of 1311125253 is 3525211131.

It is not a de Polignac number, because 1311125253 - 2⁴ = 1311125237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311125203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129700 + ... + 139442.

It is an arithmetic number, because the mean of its divisors is an integer number (112874496).

Almost surely, 2^1311125253 is an apocalyptic number.

It is an amenable number.

1311125253 is a deficient number, since it is larger than the sum of its proper divisors (494866683).

1311125253 is a wasteful number, since it uses less digits than its factorization.

1311125253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11224.

The product of its digits is 900, while the sum is 24.

The square root of 1311125253 is about 36209.4635834335. The cubic root of 1311125253 is about 1094.4973828060.

Adding to 1311125253 its reverse (3525211131), we get a palindrome (4836336384).

The spelling of 1311125253 in words is "one billion, three hundred eleven million, one hundred twenty-five thousand, two hundred fifty-three".