1230303121 has 4 divisors (see below), whose sum is σ = 1230430500. Its totient is φ = 1230175744.

The previous prime is 1230303079. The next prime is 1230303133. The reversal of 1230303121 is 1213030321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1213030321 = 677 ⋅1791773.

It can be written as a sum of positive squares in 2 ways, for example, as 1019908096 + 210395025 = 31936^2 + 14505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230303121 - 2⁷ = 1230302993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230303095 and 1230303104.

It is not an unprimeable number, because it can be changed into a prime (1230303521) 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, 47896 + ... + 68953.

It is an arithmetic number, because the mean of its divisors is an integer number (307607625).

Almost surely, 2^1230303121 is an apocalyptic number.

It is an amenable number.

1230303121 is a deficient number, since it is larger than the sum of its proper divisors (127379).

1230303121 is a wasteful number, since it uses less digits than its factorization.

1230303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127378.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1230303121 is about 35075.6770569008. The cubic root of 1230303121 is about 1071.5292777324.

Adding to 1230303121 its reverse (1213030321), we get a palindrome (2443333442).

The spelling of 1230303121 in words is "one billion, two hundred thirty million, three hundred three thousand, one hundred twenty-one".