1302321023 has 4 divisors (see below), whose sum is σ = 1378928160. Its totient is φ = 1225713888.

The previous prime is 1302321017. The next prime is 1302321037. The reversal of 1302321023 is 3201232031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3201232031 = 113 ⋅28329487.

It is a cyclic number.

It is not a de Polignac number, because 1302321023 - 2¹⁰ = 1302319999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 76607119 = 1302321023 / (1 + 3 + 0 + 2 + 3 + 2 + 1 + 0 + 2 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1302320992 and 1302321010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302327023) 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, 38303543 + ... + 38303576.

It is an arithmetic number, because the mean of its divisors is an integer number (344732040).

Almost surely, 2^1302321023 is an apocalyptic number.

1302321023 is a deficient number, since it is larger than the sum of its proper divisors (76607137).

1302321023 is an equidigital number, since it uses as much as digits as its factorization.

1302321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76607136.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1302321023 is about 36087.6851986935. The cubic root of 1302321023 is about 1092.0420220135.

Adding to 1302321023 its reverse (3201232031), we get a palindrome (4503553054).

The spelling of 1302321023 in words is "one billion, three hundred two million, three hundred twenty-one thousand, twenty-three".