320403011 has 8 divisors (see below), whose sum is σ = 331060224. Its totient is φ = 309765960.

The previous prime is 320402989. The next prime is 320403053. The reversal of 320403011 is 110304023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320403011 is a prime.

It is a super-2 number, since 2×320403011² = 205316178915732242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320403311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31610 + ... + 40496.

It is an arithmetic number, because the mean of its divisors is an integer number (41382528).

Almost surely, 2^320403011 is an apocalyptic number.

320403011 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

320403011 is a deficient number, since it is larger than the sum of its proper divisors (10657213).

320403011 is a wasteful number, since it uses less digits than its factorization.

320403011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10081.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 320403011 is about 17899.8047754717. The cubic root of 320403011 is about 684.2773995106.

Adding to 320403011 its reverse (110304023), we get a palindrome (430707034).

The spelling of 320403011 in words is "three hundred twenty million, four hundred three thousand, eleven".