1231351225253 has 4 divisors (see below), whose sum is σ = 1241046904320. Its totient is φ = 1221655546188.

The previous prime is 1231351225249. The next prime is 1231351225271. The reversal of 1231351225253 is 3525221531321.

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 1231351225253 - 2² = 1231351225249 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 (1231351221253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4847839343 + ... + 4847839596.

It is an arithmetic number, because the mean of its divisors is an integer number (310261726080).

Almost surely, 2^{1231351225253} is an apocalyptic number.

It is an amenable number.

1231351225253 is a deficient number, since it is larger than the sum of its proper divisors (9695679067).

1231351225253 is an equidigital number, since it uses as much as digits as its factorization.

1231351225253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9695679066.

The product of its digits is 54000, while the sum is 35.

Adding to 1231351225253 its reverse (3525221531321), we get a palindrome (4756572756574).

The spelling of 1231351225253 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-one million, two hundred twenty-five thousand, two hundred fifty-three".