401311465 has 8 divisors (see below), whose sum is σ = 481699080. Its totient is φ = 320965632.

The previous prime is 401311447. The next prime is 401311489. The reversal of 401311465 is 564113104.

It can be written as a sum of positive squares in 4 ways, for example, as 42928704 + 358382761 = 6552^2 + 18931^2 .

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 401311465 - 2⁵ = 401311433 is a prime.

It is a super-2 number, since 2×401311465² = 322101783880892450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17481 + ... + 33289.

It is an arithmetic number, because the mean of its divisors is an integer number (60212385).

Almost surely, 2^401311465 is an apocalyptic number.

It is an amenable number.

401311465 is a deficient number, since it is larger than the sum of its proper divisors (80387615).

401311465 is a wasteful number, since it uses less digits than its factorization.

401311465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20891.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 401311465 is about 20032.7597948960. The cubic root of 401311465 is about 737.6106676787.

Adding to 401311465 its reverse (564113104), we get a palindrome (965424569).

The spelling of 401311465 in words is "four hundred one million, three hundred eleven thousand, four hundred sixty-five".