40244120131 has 4 divisors (see below), whose sum is σ = 40244525200. Its totient is φ = 40243715064.

The previous prime is 40244120123. The next prime is 40244120159. The reversal of 40244120131 is 13102144204.

It is a happy number.

40244120131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40244120131 - 2³ = 40244120123 is a prime.

It is a super-2 number, since 2×40244120131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40244124131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59485 + ... + 289873.

It is an arithmetic number, because the mean of its divisors is an integer number (10061131300).

Almost surely, 2^40244120131 is an apocalyptic number.

40244120131 is a deficient number, since it is larger than the sum of its proper divisors (405069).

40244120131 is a wasteful number, since it uses less digits than its factorization.

40244120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405068.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 40244120131 its reverse (13102144204), we get a palindrome (53346264335).

The spelling of 40244120131 in words is "forty billion, two hundred forty-four million, one hundred twenty thousand, one hundred thirty-one".