1131856055 has 16 divisors (see below), whose sum is σ = 1482444288. Its totient is φ = 822756000.

The previous prime is 1131856031. The next prime is 1131856057. The reversal of 1131856055 is 5506581311.

It is a de Polignac number, because none of the positive numbers 2^k-1131856055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131856057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145310 + ... + 152900.

It is an arithmetic number, because the mean of its divisors is an integer number (92652768).

Almost surely, 2^1131856055 is an apocalyptic number.

1131856055 is a deficient number, since it is larger than the sum of its proper divisors (350588233).

1131856055 is a wasteful number, since it uses less digits than its factorization.

1131856055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10318.

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 1131856055 is about 33643.0684539921. The cubic root of 1131856055 is about 1042.1503998678.

The spelling of 1131856055 in words is "one billion, one hundred thirty-one million, eight hundred fifty-six thousand, fifty-five".