401345331 has 8 divisors (see below), whose sum is σ = 558393600. Its totient is φ = 255930312.

The previous prime is 401345311. The next prime is 401345339. The reversal of 401345331 is 133543104.

It is a happy number.

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

It is not a de Polignac number, because 401345331 - 2⁹ = 401344819 is a prime.

It is a super-2 number, since 2×401345331² = 322156149430999122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401345339) 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, 2908231 + ... + 2908368.

It is an arithmetic number, because the mean of its divisors is an integer number (69799200).

Almost surely, 2^401345331 is an apocalyptic number.

401345331 is a deficient number, since it is larger than the sum of its proper divisors (157048269).

401345331 is a wasteful number, since it uses less digits than its factorization.

401345331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816625.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 401345331 is about 20033.6050425279. The cubic root of 401345331 is about 737.6314156699.

Adding to 401345331 its reverse (133543104), we get a palindrome (534888435).

The spelling of 401345331 in words is "four hundred one million, three hundred forty-five thousand, three hundred thirty-one".