1011345321 has 8 divisors (see below), whose sum is σ = 1541097664. Its totient is φ = 577911600.

The previous prime is 1011345277. The next prime is 1011345331. The reversal of 1011345321 is 1235431101.

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

It is a de Polignac number, because none of the positive numbers 2^k-1011345321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 48159301 = 1011345321 / (1 + 0 + 1 + 1 + 3 + 4 + 5 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011345331) 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, 24079630 + ... + 24079671.

It is an arithmetic number, because the mean of its divisors is an integer number (192637208).

Almost surely, 2^1011345321 is an apocalyptic number.

It is an amenable number.

1011345321 is a deficient number, since it is larger than the sum of its proper divisors (529752343).

1011345321 is an equidigital number, since it uses as much as digits as its factorization.

1011345321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48159311.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1011345321 is about 31801.6559474503. The cubic root of 1011345321 is about 1003.7675613221.

Adding to 1011345321 its reverse (1235431101), we get a palindrome (2246776422).

The spelling of 1011345321 in words is "one billion, eleven million, three hundred forty-five thousand, three hundred twenty-one".