1390328023 has 8 divisors (see below), whose sum is σ = 1593528192. Its totient is φ = 1188273336.

The previous prime is 1390328003. The next prime is 1390328029. The reversal of 1390328023 is 3208230931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1390328023 - 2⁹ = 1390327511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390328029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283765 + ... + 288622.

It is an arithmetic number, because the mean of its divisors is an integer number (199191024).

Almost surely, 2^1390328023 is an apocalyptic number.

1390328023 is a deficient number, since it is larger than the sum of its proper divisors (203200169).

1390328023 is an equidigital number, since it uses as much as digits as its factorization.

1390328023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572741.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1390328023 is about 37287.1026361663. The cubic root of 1390328023 is about 1116.1068119634.

Adding to 1390328023 its reverse (3208230931), we get a palindrome (4598558954).

The spelling of 1390328023 in words is "one billion, three hundred ninety million, three hundred twenty-eight thousand, twenty-three".