1243530451131 has 16 divisors (see below), whose sum is σ = 1699490077824. Its totient is φ = 808361253504.

The previous prime is 1243530451127. The next prime is 1243530451133. The reversal of 1243530451131 is 1311540353421.

It is not a de Polignac number, because 1243530451131 - 2² = 1243530451127 is a prime.

It is a super-2 number, since 2×1243530451131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1243530451092 and 1243530451101.

It is not an unprimeable number, because it can be changed into a prime (1243530451133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8135326 + ... + 8286771.

It is an arithmetic number, because the mean of its divisors is an integer number (106218129864).

Almost surely, 2^{1243530451131} is an apocalyptic number.

1243530451131 is a deficient number, since it is larger than the sum of its proper divisors (455959626693).

1243530451131 is a wasteful number, since it uses less digits than its factorization.

1243530451131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16422730.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 1243530451131 in words is "one trillion, two hundred forty-three billion, five hundred thirty million, four hundred fifty-one thousand, one hundred thirty-one".