1121020313 has 4 divisors (see below), whose sum is σ = 1281166080. Its totient is φ = 960874548.

The previous prime is 1121020297. The next prime is 1121020321. The reversal of 1121020313 is 3130201211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121020313 - 2⁴ = 1121020297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121020343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80072873 + ... + 80072886.

It is an arithmetic number, because the mean of its divisors is an integer number (320291520).

Almost surely, 2^1121020313 is an apocalyptic number.

It is an amenable number.

1121020313 is a deficient number, since it is larger than the sum of its proper divisors (160145767).

1121020313 is an equidigital number, since it uses as much as digits as its factorization.

1121020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160145766.

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

The square root of 1121020313 is about 33481.6414322835. The cubic root of 1121020313 is about 1038.8140799680.

Adding to 1121020313 its reverse (3130201211), we get a palindrome (4251221524).

The spelling of 1121020313 in words is "one billion, one hundred twenty-one million, twenty thousand, three hundred thirteen".