1321130023 has 2 divisors, whose sum is σ = 1321130024. Its totient is φ = 1321130022.

The previous prime is 1321130011. The next prime is 1321130081. The reversal of 1321130023 is 3200311231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321130023 - 2²⁵ = 1287575591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321129979 and 1321130006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321130093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660565011 + 660565012.

It is an arithmetic number, because the mean of its divisors is an integer number (660565012).

Almost surely, 2^1321130023 is an apocalyptic number.

1321130023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321130023 is an equidigital number, since it uses as much as digits as its factorization.

1321130023 is an evil number, because the sum of its binary digits is even.

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

The square root of 1321130023 is about 36347.3523519939. The cubic root of 1321130023 is about 1097.2742493628.

Adding to 1321130023 its reverse (3200311231), we get a palindrome (4521441254).

It can be divided in two parts, 13211 and 30023, that added together give a palindrome (43234).

The spelling of 1321130023 in words is "one billion, three hundred twenty-one million, one hundred thirty thousand, twenty-three".