1131244776 has 96 divisors (see below), whose sum is σ = 3159112320. Its totient is φ = 365472000.

The previous prime is 1131244759. The next prime is 1131244831. The reversal of 1131244776 is 6774421311.

1131244776 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1131244776.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 480001 + ... + 482351.

It is an arithmetic number, because the mean of its divisors is an integer number (32907420).

Almost surely, 2^1131244776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131244776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579556160).

1131244776 is an abundant number, since it is smaller than the sum of its proper divisors (2027867544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131244776 is a wasteful number, since it uses less digits than its factorization.

1131244776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567 (or 2560 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 1131244776 is about 33633.9824582222. The cubic root of 1131244776 is about 1041.9627554618.

The spelling of 1131244776 in words is "one billion, one hundred thirty-one million, two hundred forty-four thousand, seven hundred seventy-six".