401330311 has 4 divisors (see below), whose sum is σ = 402995824. Its totient is φ = 399664800.

The previous prime is 401330297. The next prime is 401330323. The reversal of 401330311 is 113033104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401330311 - 2¹⁹ = 400806023 is a prime.

It is a super-2 number, since 2×401330311² = 322132037054713442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401339311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832395 + ... + 832876.

It is an arithmetic number, because the mean of its divisors is an integer number (100748956).

Almost surely, 2^401330311 is an apocalyptic number.

401330311 is a deficient number, since it is larger than the sum of its proper divisors (1665513).

401330311 is a wasteful number, since it uses less digits than its factorization.

401330311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665512.

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

The square root of 401330311 is about 20033.2301688969. The cubic root of 401330311 is about 737.6222138171.

Adding to 401330311 its reverse (113033104), we get a palindrome (514363415).

The spelling of 401330311 in words is "four hundred one million, three hundred thirty thousand, three hundred eleven".