1131321403401 has 32 divisors (see below), whose sum is σ = 1768712429568. Its totient is φ = 629720645760.

The previous prime is 1131321403361. The next prime is 1131321403417. The reversal of 1131321403401 is 1043041231311.

It is a happy number.

It is not a de Polignac number, because 1131321403401 - 2²² = 1131317209097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1131321403601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468121 + ... + 1575366.

It is an arithmetic number, because the mean of its divisors is an integer number (55272263424).

Almost surely, 2^{1131321403401} is an apocalyptic number.

It is an amenable number.

1131321403401 is a deficient number, since it is larger than the sum of its proper divisors (637391026167).

1131321403401 is a wasteful number, since it uses less digits than its factorization.

1131321403401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044181.

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

Adding to 1131321403401 its reverse (1043041231311), we get a palindrome (2174362634712).

The spelling of 1131321403401 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-one million, four hundred three thousand, four hundred one".