404011020131 has 4 divisors (see below), whose sum is σ = 410858664600. Its totient is φ = 397163375664.

The previous prime is 404011020103. The next prime is 404011020139. The reversal of 404011020131 is 131020110404.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404011020131 is a prime.

It is a super-2 number, since 2×404011020131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404011020139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3423822146 + ... + 3423822263.

It is an arithmetic number, because the mean of its divisors is an integer number (102714666150).

Almost surely, 2^404011020131 is an apocalyptic number.

404011020131 is a deficient number, since it is larger than the sum of its proper divisors (6847644469).

404011020131 is an equidigital number, since it uses as much as digits as its factorization.

404011020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847644468.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 404011020131 its reverse (131020110404), we get a palindrome (535031130535).

The spelling of 404011020131 in words is "four hundred four billion, eleven million, twenty thousand, one hundred thirty-one".