1023123230321 has 4 divisors (see below), whose sum is σ = 1023265594992. Its totient is φ = 1022980865652.

The previous prime is 1023123230309. The next prime is 1023123230333. The reversal of 1023123230321 is 1230323213201.

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 an interprime number because it is at equal distance from previous prime (1023123230309) and next prime (1023123230333).

It is a cyclic number.

It is not a de Polignac number, because 1023123230321 - 2²⁶ = 1023056121457 is a prime.

It is a super-2 number, since 2×1023123230321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023123230821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71171555 + ... + 71185928.

It is an arithmetic number, because the mean of its divisors is an integer number (255816398748).

Almost surely, 2^{1023123230321} is an apocalyptic number.

It is an amenable number.

1023123230321 is a deficient number, since it is larger than the sum of its proper divisors (142364671).

1023123230321 is an equidigital number, since it uses as much as digits as its factorization.

1023123230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142364670.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1023123230321 its reverse (1230323213201), we get a palindrome (2253446443522).

The spelling of 1023123230321 in words is "one trillion, twenty-three billion, one hundred twenty-three million, two hundred thirty thousand, three hundred twenty-one".