1131220046 has 12 divisors (see below), whose sum is σ = 1865111136. Its totient is φ = 514190820.

The previous prime is 1131220037. The next prime is 1131220087. The reversal of 1131220046 is 6400221311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2336990 + ... + 2337473.

It is an arithmetic number, because the mean of its divisors is an integer number (155425928).

Almost surely, 2^1131220046 is an apocalyptic number.

1131220046 is a deficient number, since it is larger than the sum of its proper divisors (733891090).

1131220046 is a wasteful number, since it uses less digits than its factorization.

1131220046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674487 (or 4674476 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1131220046 is about 33633.6148220794. The cubic root of 1131220046 is about 1041.9551626675.

Adding to 1131220046 its reverse (6400221311), we get a palindrome (7531441357).

The spelling of 1131220046 in words is "one billion, one hundred thirty-one million, two hundred twenty thousand, forty-six".