1121323013 has 8 divisors (see below), whose sum is σ = 1126402200. Its totient is φ = 1116252928.

The previous prime is 1121323001. The next prime is 1121323037. The reversal of 1121323013 is 3103231211.

It can be written as a sum of positive squares in 4 ways, for example, as 241429444 + 879893569 = 15538^2 + 29663^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1121323013 - 2¹² = 1121318917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121322982 and 1121323000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121323613) 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, 376193 + ... + 379161.

It is an arithmetic number, because the mean of its divisors is an integer number (140800275).

Almost surely, 2^1121323013 is an apocalyptic number.

It is an amenable number.

1121323013 is a deficient number, since it is larger than the sum of its proper divisors (5079187).

1121323013 is a wasteful number, since it uses less digits than its factorization.

1121323013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1121323013 is about 33486.1615148706. The cubic root of 1121323013 is about 1038.9075723933.

Adding to 1121323013 its reverse (3103231211), we get a palindrome (4224554224).

The spelling of 1121323013 in words is "one billion, one hundred twenty-one million, three hundred twenty-three thousand, thirteen".