1311231546253 has 4 divisors (see below), whose sum is σ = 1311601223200. Its totient is φ = 1310861869308.

The previous prime is 1311231546223. The next prime is 1311231546319. The reversal of 1311231546253 is 3526451321131.

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 1311231546253 - 2¹⁷ = 1311231415181 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 (1311231546223) 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, 184833153 + ... + 184840246.

It is an arithmetic number, because the mean of its divisors is an integer number (327900305800).

Almost surely, 2^{1311231546253} is an apocalyptic number.

It is an amenable number.

1311231546253 is a deficient number, since it is larger than the sum of its proper divisors (369676947).

1311231546253 is an equidigital number, since it uses as much as digits as its factorization.

1311231546253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369676946.

The product of its digits is 64800, while the sum is 37.

Adding to 1311231546253 its reverse (3526451321131), we get a palindrome (4837682867384).

The spelling of 1311231546253 in words is "one trillion, three hundred eleven billion, two hundred thirty-one million, five hundred forty-six thousand, two hundred fifty-three".