1131043206 has 64 divisors (see below), whose sum is σ = 2345241600. Its totient is φ = 363511680.

The previous prime is 1131043159. The next prime is 1131043211. The reversal of 1131043206 is 6023401311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6537736 + ... + 6537908.

It is an arithmetic number, because the mean of its divisors is an integer number (36644400).

Almost surely, 2^1131043206 is an apocalyptic number.

1131043206 is an abundant number, since it is smaller than the sum of its proper divisors (1214198394).

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

1131043206 is a wasteful number, since it uses less digits than its factorization.

1131043206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1131043206 is about 33630.9858017870. The cubic root of 1131043206 is about 1041.9008646689.

Adding to 1131043206 its reverse (6023401311), we get a palindrome (7154444517).

The spelling of 1131043206 in words is "one billion, one hundred thirty-one million, forty-three thousand, two hundred six".