1115400321231 has 64 divisors (see below), whose sum is σ = 1727915535360. Its totient is φ = 626858496000.

The previous prime is 1115400321229. The next prime is 1115400321253. The reversal of 1115400321231 is 1321230045111.

It is not a de Polignac number, because 1115400321231 - 2¹ = 1115400321229 is a prime.

It is a super-2 number, since 2×1115400321231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115400321031) 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 63 ways as a sum of consecutive naturals, for example, 559657971 + ... + 559659963.

It is an arithmetic number, because the mean of its divisors is an integer number (26998680240).

Almost surely, 2^{1115400321231} is an apocalyptic number.

1115400321231 is a deficient number, since it is larger than the sum of its proper divisors (612515214129).

1115400321231 is a wasteful number, since it uses less digits than its factorization.

1115400321231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 1115400321231 its reverse (1321230045111), we get a palindrome (2436630366342).

The spelling of 1115400321231 in words is "one trillion, one hundred fifteen billion, four hundred million, three hundred twenty-one thousand, two hundred thirty-one".