1131331412 has 12 divisors (see below), whose sum is σ = 2048100180. Its totient is φ = 546159936.

The previous prime is 1131331363. The next prime is 1131331447. The reversal of 1131331412 is 2141331311.

It can be written as a sum of positive squares in 2 ways, for example, as 633327556 + 498003856 = 25166^2 + 22316^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4876313 + ... + 4876544.

It is an arithmetic number, because the mean of its divisors is an integer number (170675015).

Almost surely, 2^1131331412 is an apocalyptic number.

It is an amenable number.

1131331412 is a deficient number, since it is larger than the sum of its proper divisors (916768768).

1131331412 is a wasteful number, since it uses less digits than its factorization.

1131331412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9752890 (or 9752888 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 1131331412 is about 33635.2703571712. The cubic root of 1131331412 is about 1041.9893542383.

Adding to 1131331412 its reverse (2141331311), we get a palindrome (3272662723).

The spelling of 1131331412 in words is "one billion, one hundred thirty-one million, three hundred thirty-one thousand, four hundred twelve".