1131064155 has 96 divisors (see below), whose sum is σ = 2214313920. Its totient is φ = 550540800.

The previous prime is 1131064153. The next prime is 1131064223. The reversal of 1131064155 is 5514601311.

1131064155 is a `hidden beast` number, since 1 + 1 + 3 + 10 + 641 + 5 + 5 = 666.

It is not a de Polignac number, because 1131064155 - 2¹ = 1131064153 is a prime.

It is a super-2 number, since 2×1131064155² = 2558612245451728050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1131064153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1594941 + ... + 1595649.

It is an arithmetic number, because the mean of its divisors is an integer number (23065770).

Almost surely, 2^1131064155 is an apocalyptic number.

1131064155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1131064155 is a deficient number, since it is larger than the sum of its proper divisors (1083249765).

1131064155 is a wasteful number, since it uses less digits than its factorization.

1131064155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1131064155 is about 33631.2972541946. The cubic root of 1131064155 is about 1041.9072972692.

Adding to 1131064155 its reverse (5514601311), we get a palindrome (6645665466).

The spelling of 1131064155 in words is "one billion, one hundred thirty-one million, sixty-four thousand, one hundred fifty-five".