1131021338 has 8 divisors (see below), whose sum is σ = 1720427040. Its totient is φ = 557545660.

The previous prime is 1131021337. The next prime is 1131021349. The reversal of 1131021338 is 8331201311.

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

It is a super-2 number, since 2×1131021338² = 2558418534022620488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131021337) 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 3 ways as a sum of consecutive naturals, for example, 3982328 + ... + 3982611.

It is an arithmetic number, because the mean of its divisors is an integer number (215053380).

Almost surely, 2^1131021338 is an apocalyptic number.

1131021338 is a deficient number, since it is larger than the sum of its proper divisors (589405702).

1131021338 is an equidigital number, since it uses as much as digits as its factorization.

1131021338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7965012.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1131021338 is about 33630.6606833705. The cubic root of 1131021338 is about 1041.8941497958.

Adding to 1131021338 its reverse (8331201311), we get a palindrome (9462222649).

The spelling of 1131021338 in words is "one billion, one hundred thirty-one million, twenty-one thousand, three hundred thirty-eight".