1331042011 has 8 divisors (see below), whose sum is σ = 1435538160. Its totient is φ = 1226847072.

The previous prime is 1331042003. The next prime is 1331042023. The reversal of 1331042011 is 1102401331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331042011 - 2³ = 1331042003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331042311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66076 + ... + 83833.

It is an arithmetic number, because the mean of its divisors is an integer number (179442270).

Almost surely, 2^1331042011 is an apocalyptic number.

1331042011 is a deficient number, since it is larger than the sum of its proper divisors (104496149).

1331042011 is a wasteful number, since it uses less digits than its factorization.

1331042011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150605.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1331042011 is about 36483.4484526888. The cubic root of 1331042011 is about 1100.0115731565.

Adding to 1331042011 its reverse (1102401331), we get a palindrome (2433443342).

The spelling of 1331042011 in words is "one billion, three hundred thirty-one million, forty-two thousand, eleven".