1131400447 has 2 divisors, whose sum is σ = 1131400448. Its totient is φ = 1131400446.

The previous prime is 1131400423. The next prime is 1131400469. The reversal of 1131400447 is 7440041311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131400447 - 2²³ = 1123011839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131404447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565700223 + 565700224.

It is an arithmetic number, because the mean of its divisors is an integer number (565700224).

Almost surely, 2^1131400447 is an apocalyptic number.

1131400447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131400447 is an equidigital number, since it uses as much as digits as its factorization.

1131400447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1131400447 is about 33636.2965708177. The cubic root of 1131400447 is about 1042.0105482260.

Adding to 1131400447 its reverse (7440041311), we get a palindrome (8571441758).

The spelling of 1131400447 in words is "one billion, one hundred thirty-one million, four hundred thousand, four hundred forty-seven".