1131021361 has 8 divisors (see below), whose sum is σ = 1139402880. Its totient is φ = 1122659328.

The previous prime is 1131021349. The next prime is 1131021403. The reversal of 1131021361 is 1631201311.

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 1131021361 - 2²⁹ = 594150449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131021461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124020 + ... + 132826.

It is an arithmetic number, because the mean of its divisors is an integer number (142425360).

Almost surely, 2^1131021361 is an apocalyptic number.

It is an amenable number.

1131021361 is a deficient number, since it is larger than the sum of its proper divisors (8381519).

1131021361 is an equidigital number, since it uses as much as digits as its factorization.

1131021361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9743.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1131021361 is about 33630.6610253203. The cubic root of 1131021361 is about 1041.8941568583.

Adding to 1131021361 its reverse (1631201311), we get a palindrome (2762222672).

The spelling of 1131021361 in words is "one billion, one hundred thirty-one million, twenty-one thousand, three hundred sixty-one".