1121310321 has 8 divisors (see below), whose sum is σ = 1495245024. Its totient is φ = 747457920.

The previous prime is 1121310319. The next prime is 1121310343. The reversal of 1121310321 is 1230131211.

It is a happy number.

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

It is not a de Polignac number, because 1121310321 - 2¹ = 1121310319 is a prime.

It is a super-2 number, since 2×1121310321² = 2514673671962246082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121310321.

It is not an unprimeable number, because it can be changed into a prime (1121310301) 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, 26806 + ... + 54416.

It is an arithmetic number, because the mean of its divisors is an integer number (186905628).

Almost surely, 2^1121310321 is an apocalyptic number.

It is an amenable number.

1121310321 is a deficient number, since it is larger than the sum of its proper divisors (373934703).

1121310321 is a wasteful number, since it uses less digits than its factorization.

1121310321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41151.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1121310321 is about 33485.9720032135. The cubic root of 1121310321 is about 1038.9036526590.

Adding to 1121310321 its reverse (1230131211), we get a palindrome (2351441532).

The spelling of 1121310321 in words is "one billion, one hundred twenty-one million, three hundred ten thousand, three hundred twenty-one".