320401023 has 16 divisors (see below), whose sum is σ = 455051520. Its totient is φ = 199826816.

The previous prime is 320401013. The next prime is 320401033. The reversal of 320401023 is 320104023.

It is an interprime number because it is at equal distance from previous prime (320401013) and next prime (320401033).

It is a cyclic number.

It is not a de Polignac number, because 320401023 - 2¹⁴ = 320384639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320400993 and 320401011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320401013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10293 + ... + 27326.

It is an arithmetic number, because the mean of its divisors is an integer number (28440720).

Almost surely, 2^320401023 is an apocalyptic number.

320401023 is a deficient number, since it is larger than the sum of its proper divisors (134650497).

320401023 is a wasteful number, since it uses less digits than its factorization.

320401023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37806.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 320401023 is about 17899.7492440537. The cubic root of 320401023 is about 684.2759842656.

Adding to 320401023 its reverse (320104023), we get a palindrome (640505046).

The spelling of 320401023 in words is "three hundred twenty million, four hundred one thousand, twenty-three".