1321032011 has 8 divisors (see below), whose sum is σ = 1423830240. Its totient is φ = 1218402432.

The previous prime is 1321031989. The next prime is 1321032023. The reversal of 1321032011 is 1102301231.

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

It is not a de Polignac number, because 1321032011 - 2⁶ = 1321031947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321032061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25646 + ... + 57443.

It is an arithmetic number, because the mean of its divisors is an integer number (177978780).

Almost surely, 2^1321032011 is an apocalyptic number.

1321032011 is a deficient number, since it is larger than the sum of its proper divisors (102798229).

1321032011 is a wasteful number, since it uses less digits than its factorization.

1321032011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84325.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1321032011 is about 36346.0040582180. The cubic root of 1321032011 is about 1097.2471138295.

Adding to 1321032011 its reverse (1102301231), we get a palindrome (2423333242).

The spelling of 1321032011 in words is "one billion, three hundred twenty-one million, thirty-two thousand, eleven".