1311212253 has 16 divisors (see below), whose sum is σ = 1933654016. Its totient is φ = 785090880.

The previous prime is 1311212237. The next prime is 1311212299. The reversal of 1311212253 is 3522121131.

1311212253 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1311212253 - 2⁴ = 1311212237 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 (1311212213) 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, 452893 + ... + 455778.

It is an arithmetic number, because the mean of its divisors is an integer number (120853376).

Almost surely, 2^1311212253 is an apocalyptic number.

1311212253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1311212253 is a deficient number, since it is larger than the sum of its proper divisors (622441763).

1311212253 is a wasteful number, since it uses less digits than its factorization.

1311212253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908724.

The product of its digits is 360, while the sum is 21.

The square root of 1311212253 is about 36210.6649069028. The cubic root of 1311212253 is about 1094.5215908075.

Adding to 1311212253 its reverse (3522121131), we get a palindrome (4833333384).

The spelling of 1311212253 in words is "one billion, three hundred eleven million, two hundred twelve thousand, two hundred fifty-three".