1030312121 has 4 divisors (see below), whose sum is σ = 1054272912. Its totient is φ = 1006351332.

The previous prime is 1030312111. The next prime is 1030312139. The reversal of 1030312121 is 1212130301.

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 1030312121 - 2⁶ = 1030312057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030312096 and 1030312105.

It is not an unprimeable number, because it can be changed into a prime (1030312111) 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, 11980331 + ... + 11980416.

It is an arithmetic number, because the mean of its divisors is an integer number (263568228).

Almost surely, 2^1030312121 is an apocalyptic number.

It is an amenable number.

1030312121 is a deficient number, since it is larger than the sum of its proper divisors (23960791).

1030312121 is an equidigital number, since it uses as much as digits as its factorization.

1030312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23960790.

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

The square root of 1030312121 is about 32098.4753687773. The cubic root of 1030312121 is about 1010.0036339444.

Adding to 1030312121 its reverse (1212130301), we get a palindrome (2242442422).

The spelling of 1030312121 in words is "one billion, thirty million, three hundred twelve thousand, one hundred twenty-one".