1131003421 has 8 divisors (see below), whose sum is σ = 1212693120. Its totient is φ = 1050998208.

The previous prime is 1131003407. The next prime is 1131003431. The reversal of 1131003421 is 1243001311.

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

It is not a de Polignac number, because 1131003421 - 2²¹ = 1128906269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131003395 and 1131003404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131003431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419731 + ... + 422416.

It is an arithmetic number, because the mean of its divisors is an integer number (151586640).

Almost surely, 2^1131003421 is an apocalyptic number.

It is an amenable number.

1131003421 is a deficient number, since it is larger than the sum of its proper divisors (81689699).

1131003421 is an equidigital number, since it uses as much as digits as its factorization.

1131003421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842243.

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

The square root of 1131003421 is about 33630.3943033679. The cubic root of 1131003421 is about 1041.8886480676. Note that the first 3 decimals are identical.

Adding to 1131003421 its reverse (1243001311), we get a palindrome (2374004732).

The spelling of 1131003421 in words is "one billion, one hundred thirty-one million, three thousand, four hundred twenty-one".