1031133321 has 20 divisors (see below), whose sum is σ = 1546703312. Its totient is φ = 687409092.

The previous prime is 1031133293. The next prime is 1031133361. The reversal of 1031133321 is 1233311301.

It is a happy number.

1031133321 is a `hidden beast` number, since 1 + 0 + 311 + 33 + 321 = 666.

It is not a de Polignac number, because 1031133321 - 2¹³ = 1031125129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031133294 and 1031133303.

It is not an unprimeable number, because it can be changed into a prime (1031133361) 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 19 ways as a sum of consecutive naturals, for example, 6511 + ... + 45876.

Almost surely, 2^1031133321 is an apocalyptic number.

It is an amenable number.

1031133321 is a deficient number, since it is larger than the sum of its proper divisors (515569991).

1031133321 is an frugal number, since it uses more digits than its factorization.

1031133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52414 (or 52390 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1031133321 is about 32111.2647057072. The cubic root of 1031133321 is about 1010.2719004583.

Adding to 1031133321 its reverse (1233311301), we get a palindrome (2264444622).

The spelling of 1031133321 in words is "one billion, thirty-one million, one hundred thirty-three thousand, three hundred twenty-one".