1131262547 has 2 divisors, whose sum is σ = 1131262548. Its totient is φ = 1131262546.

The previous prime is 1131262511. The next prime is 1131262589. The reversal of 1131262547 is 7452621311.

It is a weak prime.

It is an emirp because it is prime and its reverse (7452621311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131262547 - 2¹² = 1131258451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131262747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565631273 + 565631274.

It is an arithmetic number, because the mean of its divisors is an integer number (565631274).

Almost surely, 2^1131262547 is an apocalyptic number.

1131262547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131262547 is an equidigital number, since it uses as much as digits as its factorization.

1131262547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 1131262547 is about 33634.2466394001. The cubic root of 1131262547 is about 1041.9682115823.

Adding to 1131262547 its reverse (7452621311), we get a palindrome (8583883858).

The spelling of 1131262547 in words is "one billion, one hundred thirty-one million, two hundred sixty-two thousand, five hundred forty-seven".