1131445321541 has 2 divisors, whose sum is σ = 1131445321542. Its totient is φ = 1131445321540.

The previous prime is 1131445321519. The next prime is 1131445321547. The reversal of 1131445321541 is 1451235441311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1024405112641 + 107040208900 = 1012129^2 + 327170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131445321541 is a prime.

It is a super-2 number, since 2×1131445321541² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131445321547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565722660770 + 565722660771.

It is an arithmetic number, because the mean of its divisors is an integer number (565722660771).

Almost surely, 2^{1131445321541} is an apocalyptic number.

It is an amenable number.

1131445321541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131445321541 is an equidigital number, since it uses as much as digits as its factorization.

1131445321541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The spelling of 1131445321541 in words is "one trillion, one hundred thirty-one billion, four hundred forty-five million, three hundred twenty-one thousand, five hundred forty-one".