1131310241 has 2 divisors, whose sum is σ = 1131310242. Its totient is φ = 1131310240.

The previous prime is 1131310207. The next prime is 1131310247. The reversal of 1131310241 is 1420131311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1018950241 + 112360000 = 31921^2 + 10600^2 .

It is an emirp because it is prime and its reverse (1420131311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131310241 is a prime.

It is a super-2 number, since 2×1131310241² = 2559725722782956162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1131310247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565655120 + 565655121.

It is an arithmetic number, because the mean of its divisors is an integer number (565655121).

Almost surely, 2^1131310241 is an apocalyptic number.

It is an amenable number.

1131310241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131310241 is an equidigital number, since it uses as much as digits as its factorization.

1131310241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1131310241 is about 33634.9556414157. The cubic root of 1131310241 is about 1041.9828544942.

Adding to 1131310241 its reverse (1420131311), we get a palindrome (2551441552).

The spelling of 1131310241 in words is "one billion, one hundred thirty-one million, three hundred ten thousand, two hundred forty-one".