401323165 has 8 divisors (see below), whose sum is σ = 509916600. Its totient is φ = 302172672.

The previous prime is 401323051. The next prime is 401323193. The reversal of 401323165 is 561323104.

It can be written as a sum of positive squares in 4 ways, for example, as 97239321 + 304083844 = 9861^2 + 17438^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 401323165 - 2²¹ = 399226013 is a prime.

It is a super-2 number, since 2×401323165² = 322120565531234450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2360640 + ... + 2360809.

It is an arithmetic number, because the mean of its divisors is an integer number (63739575).

Almost surely, 2^401323165 is an apocalyptic number.

It is an amenable number.

401323165 is a deficient number, since it is larger than the sum of its proper divisors (108593435).

401323165 is a wasteful number, since it uses less digits than its factorization.

401323165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721471.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 401323165 is about 20033.0518144391. The cubic root of 401323165 is about 737.6178358110.

Adding to 401323165 its reverse (561323104), we get a palindrome (962646269).

The spelling of 401323165 in words is "four hundred one million, three hundred twenty-three thousand, one hundred sixty-five".