1243312201131 has 64 divisors (see below), whose sum is σ = 2285946356736. Its totient is φ = 580080268800.

The previous prime is 1243312201121. The next prime is 1243312201211. The reversal of 1243312201131 is 1311022133421.

It is not a de Polignac number, because 1243312201131 - 2⁶ = 1243312201067 is a prime.

It is a super-2 number, since 2×1243312201131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243312201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5483800 + ... + 5706021.

It is an arithmetic number, because the mean of its divisors is an integer number (35717911824).

Almost surely, 2^{1243312201131} is an apocalyptic number.

1243312201131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1243312201131 is a deficient number, since it is larger than the sum of its proper divisors (1042634155605).

1243312201131 is a wasteful number, since it uses less digits than its factorization.

1243312201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11189892.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1243312201131 its reverse (1311022133421), we get a palindrome (2554334334552).

The spelling of 1243312201131 in words is "one trillion, two hundred forty-three billion, three hundred twelve million, two hundred one thousand, one hundred thirty-one".