1231352513251 has 16 divisors (see below), whose sum is σ = 1408380313600. Its totient is φ = 1054605054528.

The previous prime is 1231352513177. The next prime is 1231352513263. The reversal of 1231352513251 is 1523152531321.

It is a cyclic number.

It is not a de Polignac number, because 1231352513251 - 2¹⁷ = 1231352382179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231352513291) 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 15 ways as a sum of consecutive naturals, for example, 114763255 + ... + 114773983.

It is an arithmetic number, because the mean of its divisors is an integer number (88023769600).

Almost surely, 2^{1231352513251} is an apocalyptic number.

1231352513251 is a deficient number, since it is larger than the sum of its proper divisors (177027800349).

1231352513251 is a wasteful number, since it uses less digits than its factorization.

1231352513251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22258.

The product of its digits is 27000, while the sum is 34.

The spelling of 1231352513251 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-two million, five hundred thirteen thousand, two hundred fifty-one".