1131301211 has 8 divisors (see below), whose sum is σ = 1198732800. Its totient is φ = 1064658600.

The previous prime is 1131301169. The next prime is 1131301219. The reversal of 1131301211 is 1121031311.

It is a happy number.

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 1131301211 - 2²² = 1127106907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131301219) 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, 194291 + ... + 200028.

It is an arithmetic number, because the mean of its divisors is an integer number (149841600).

Almost surely, 2^1131301211 is an apocalyptic number.

1131301211 is a deficient number, since it is larger than the sum of its proper divisors (67431589).

1131301211 is a wasteful number, since it uses less digits than its factorization.

1131301211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394489.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1131301211 is about 33634.8214057991. The cubic root of 1131301211 is about 1041.9800821541.

Adding to 1131301211 its reverse (1121031311), we get a palindrome (2252332522).

The spelling of 1131301211 in words is "one billion, one hundred thirty-one million, three hundred one thousand, two hundred eleven".