1131021003 has 8 divisors (see below), whose sum is σ = 1723460608. Its totient is φ = 646297704.

The previous prime is 1131020993. The next prime is 1131021011. The reversal of 1131021003 is 3001201311.

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

It is not a de Polignac number, because 1131021003 - 2⁹ = 1131020491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131021003.

It is not an unprimeable number, because it can be changed into a prime (1131021013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26929051 + ... + 26929092.

It is an arithmetic number, because the mean of its divisors is an integer number (215432576).

Almost surely, 2^1131021003 is an apocalyptic number.

1131021003 is a deficient number, since it is larger than the sum of its proper divisors (592439605).

1131021003 is an equidigital number, since it uses as much as digits as its factorization.

1131021003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53858153.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1131021003 is about 33630.6557027959. The cubic root of 1131021003 is about 1041.8940469287.

Adding to 1131021003 its reverse (3001201311), we get a palindrome (4132222314).

The spelling of 1131021003 in words is "one billion, one hundred thirty-one million, twenty-one thousand, three".