1131254655 has 16 divisors (see below), whose sum is σ = 1888704000. Its totient is φ = 577103648.

The previous prime is 1131254653. The next prime is 1131254669. The reversal of 1131254655 is 5564521311.

It is a cyclic number.

It is not a de Polignac number, because 1131254655 - 2¹ = 1131254653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131254651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1639155 + ... + 1639844.

It is an arithmetic number, because the mean of its divisors is an integer number (118044000).

Almost surely, 2^1131254655 is an apocalyptic number.

1131254655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1131254655 is a deficient number, since it is larger than the sum of its proper divisors (757449345).

1131254655 is a wasteful number, since it uses less digits than its factorization.

1131254655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279030.

The product of its digits is 18000, while the sum is 33.

The square root of 1131254655 is about 33634.1293182981. The cubic root of 1131254655 is about 1041.9657885573.

Adding to 1131254655 its reverse (5564521311), we get a palindrome (6695775966).

The spelling of 1131254655 in words is "one billion, one hundred thirty-one million, two hundred fifty-four thousand, six hundred fifty-five".