401147321 has 4 divisors (see below), whose sum is σ = 410931444. Its totient is φ = 391363200.

The previous prime is 401147311. The next prime is 401147353. The reversal of 401147321 is 123741104.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14592400 + 386554921 = 3820^2 + 19661^2 .

It is a cyclic number.

It is not a de Polignac number, because 401147321 - 2²² = 396953017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401147311) 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, 4892000 + ... + 4892081.

It is an arithmetic number, because the mean of its divisors is an integer number (102732861).

Almost surely, 2^401147321 is an apocalyptic number.

401147321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

401147321 is a deficient number, since it is larger than the sum of its proper divisors (9784123).

401147321 is an equidigital number, since it uses as much as digits as its factorization.

401147321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9784122.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 401147321 is about 20028.6624865466. The cubic root of 401147321 is about 737.5100883806.

Adding to 401147321 its reverse (123741104), we get a palindrome (524888425).

The spelling of 401147321 in words is "four hundred one million, one hundred forty-seven thousand, three hundred twenty-one".