401320265 has 16 divisors (see below), whose sum is σ = 500774400. Its totient is φ = 308415360.

The previous prime is 401320243. The next prime is 401320267. The reversal of 401320265 is 562023104.

It is not a de Polignac number, because 401320265 - 2¹⁶ = 401254729 is a prime.

It is a super-2 number, since 2×401320265² = 322115910199340450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401320265.

It is not an unprimeable number, because it can be changed into a prime (401320267) 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 15 ways as a sum of consecutive naturals, for example, 11786 + ... + 30684.

It is an arithmetic number, because the mean of its divisors is an integer number (31298400).

Almost surely, 2^401320265 is an apocalyptic number.

It is an amenable number.

401320265 is a deficient number, since it is larger than the sum of its proper divisors (99454135).

401320265 is a wasteful number, since it uses less digits than its factorization.

401320265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19072.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 401320265 is about 20032.9794339235. The cubic root of 401320265 is about 737.6160591074.

Adding to 401320265 its reverse (562023104), we get a palindrome (963343369).

The spelling of 401320265 in words is "four hundred one million, three hundred twenty thousand, two hundred sixty-five".