1131040043321 has 2 divisors, whose sum is σ = 1131040043322. Its totient is φ = 1131040043320.

The previous prime is 1131040043281. The next prime is 1131040043347. The reversal of 1131040043321 is 1233400401311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978130890025 + 152909153296 = 989005^2 + 391036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131040043321 - 2³⁴ = 1113860174137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131040043521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565520021660 + 565520021661.

It is an arithmetic number, because the mean of its divisors is an integer number (565520021661).

Almost surely, 2^{1131040043321} is an apocalyptic number.

It is an amenable number.

1131040043321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131040043321 is an equidigital number, since it uses as much as digits as its factorization.

1131040043321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1131040043321 its reverse (1233400401311), we get a palindrome (2364440444632).

The spelling of 1131040043321 in words is "one trillion, one hundred thirty-one billion, forty million, forty-three thousand, three hundred twenty-one".