1020320401 has 4 divisors (see below), whose sum is σ = 1026430272. Its totient is φ = 1014210532.

The previous prime is 1020320351. The next prime is 1020320419. The reversal of 1020320401 is 1040230201.

1020320401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 1020320401 - 2²³ = 1011931793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020320491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3054685 + ... + 3055018.

It is an arithmetic number, because the mean of its divisors is an integer number (256607568).

Almost surely, 2^1020320401 is an apocalyptic number.

It is an amenable number.

1020320401 is a deficient number, since it is larger than the sum of its proper divisors (6109871).

1020320401 is an equidigital number, since it uses as much as digits as its factorization.

1020320401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109870.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1020320401 is about 31942.4545237212. The cubic root of 1020320401 is about 1006.7280981740.

Adding to 1020320401 its reverse (1040230201), we get a palindrome (2060550602).

The spelling of 1020320401 in words is "one billion, twenty million, three hundred twenty thousand, four hundred one".