40400411331 has 16 divisors (see below), whose sum is σ = 61566201344. Its totient is φ = 23084573184.

The previous prime is 40400411327. The next prime is 40400411339. The reversal of 40400411331 is 13311400404.

It is not a de Polignac number, because 40400411331 - 2² = 40400411327 is a prime.

It is a super-2 number, since 2×40400411331² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40400411298 and 40400411307.

It is not an unprimeable number, because it can be changed into a prime (40400411339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381411 + ... + 475683.

It is an arithmetic number, because the mean of its divisors is an integer number (3847887584).

Almost surely, 2^40400411331 is an apocalyptic number.

40400411331 is a deficient number, since it is larger than the sum of its proper divisors (21165790013).

40400411331 is a wasteful number, since it uses less digits than its factorization.

40400411331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114690.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 40400411331 its reverse (13311400404), we get a palindrome (53711811735).

The spelling of 40400411331 in words is "forty billion, four hundred million, four hundred eleven thousand, three hundred thirty-one".