401311090 has 8 divisors (see below), whose sum is σ = 722359980. Its totient is φ = 160524432.

The previous prime is 401311069. The next prime is 401311091. The reversal of 401311090 is 90113104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 385062129 + 16248961 = 19623^2 + 4031^2 .

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

It is a super-2 number, since 2×401311090² = 322101181913976200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401311091) 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 3 ways as a sum of consecutive naturals, for example, 20065545 + ... + 20065564.

Almost surely, 2^401311090 is an apocalyptic number.

401311090 is a deficient number, since it is larger than the sum of its proper divisors (321048890).

401311090 is a wasteful number, since it uses less digits than its factorization.

401311090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40131116.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 401311090 is about 20032.7504352248. The cubic root of 401311090 is about 737.6104379286.

Adding to 401311090 its reverse (90113104), we get a palindrome (491424194).

The spelling of 401311090 in words is "four hundred one million, three hundred eleven thousand, ninety".