1030312123 has 4 divisors (see below), whose sum is σ = 1032638328. Its totient is φ = 1027985920.

The previous prime is 1030312111. The next prime is 1030312139. The reversal of 1030312123 is 3212130301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212130301 = 4373 ⋅734537.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1030312123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030312097 and 1030312106.

It is not an unprimeable number, because it can be changed into a prime (1030312223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162438 + ... + 1163323.

It is an arithmetic number, because the mean of its divisors is an integer number (258159582).

Almost surely, 2^1030312123 is an apocalyptic number.

1030312123 is a deficient number, since it is larger than the sum of its proper divisors (2326205).

1030312123 is an equidigital number, since it uses as much as digits as its factorization.

1030312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326204.

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

The square root of 1030312123 is about 32098.4753999314. The cubic root of 1030312123 is about 1010.0036345979.

Adding to 1030312123 its reverse (3212130301), we get a palindrome (4242442424).

The spelling of 1030312123 in words is "one billion, thirty million, three hundred twelve thousand, one hundred twenty-three".