1310030121 has 4 divisors (see below), whose sum is σ = 1746706832. Its totient is φ = 873353412.

The previous prime is 1310030077. The next prime is 1310030123. The reversal of 1310030121 is 1210300131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1210300131 = 3 ⋅403433377.

It is not a de Polignac number, because 1310030121 - 2¹⁹ = 1309505833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310030097 and 1310030106.

It is not an unprimeable number, because it can be changed into a prime (1310030123) 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, 218338351 + ... + 218338356.

It is an arithmetic number, because the mean of its divisors is an integer number (436676708).

Almost surely, 2^1310030121 is an apocalyptic number.

It is an amenable number.

1310030121 is a deficient number, since it is larger than the sum of its proper divisors (436676711).

1310030121 is an equidigital number, since it uses as much as digits as its factorization.

1310030121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436676710.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1310030121 is about 36194.3382450902. The cubic root of 1310030121 is about 1094.1925675389.

Adding to 1310030121 its reverse (1210300131), we get a palindrome (2520330252).

The spelling of 1310030121 in words is "one billion, three hundred ten million, thirty thousand, one hundred twenty-one".